Double Edge Straight Glass Grinding Machine
Double Edge Straight Glass Grinding Machine
2026-02-02
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Double Edge Straight Glass Grinding Machine: A Comprehensive Analysis of Design, Technology and Industrial Application
Abstract
The Double Edge Straight Glass Grinding Machine is a core piece of automated processing equipment in the modern glass deep-processing industry, dedicated to the simultaneous high-precision grinding, polishing and chamfering of two parallel straight edges of flat glass. This article systematically expounds the structural composition, working principle, core technical parameters, application scenarios, performance advantages, maintenance specifications and future development trends of the double edge straight glass grinding machine. By analyzing its technological innovation, processing efficiency and industrial value, it aims to provide a theoretical basis and practical reference for glass processing enterprises, equipment R&D institutions and technical practitioners, and clarify the important role of this equipment in promoting the automation, intelligence and high-quality development of the glass processing industry.
1. Introduction
With the rapid expansion of application fields such as architectural decoration, automotive manufacturing, home appliances, furniture and photovoltaic new energy, the demand for flat glass products has shown a sustained growth trend, and the requirements for glass edge processing quality, production efficiency and dimensional accuracy are becoming increasingly stringent. The traditional single-side glass grinding machine can only process one edge of the glass at a time, which requires repeated clamping and positioning of the glass, resulting in low production efficiency, poor dimensional consistency, high labor intensity and high production cost, and it is difficult to adapt to the large-scale and standardized production needs of modern glass processing.
In response to the pain points of the industry, the double edge straight glass grinding machine has been developed and applied, which realizes the simultaneous processing of two parallel straight edges of flat glass through a dual-spindle group, dual-conveying system and integrated control technology. It integrates multiple processes such as coarse grinding, fine grinding, polishing and chamfering, and completes the edge processing of glass in one pass, which greatly improves the processing efficiency and product quality. This equipment has become an indispensable key equipment in the glass deep-processing production line, and its technical level and performance indicators directly affect the core competitiveness of glass processing enterprises. This article will conduct an in-depth and comprehensive analysis of the double edge straight glass grinding machine from multiple dimensions, and explore its technical characteristics and development potential in the industrial field.
2. Structural Composition and Core Components
The double edge straight glass grinding machine adopts a symmetrical integrated structural design, which is mainly composed of a main frame, a double-side grinding spindle group, a pneumatic clamping and conveying system, a PLC intelligent control system, a cooling and dust removal system, a glass positioning mechanism and a safety protection device. Each component is designed and matched with high precision to ensure the stability, accuracy and continuity of the equipment during operation.
2.1 Main Frame
The main frame is the load-bearing foundation of the entire equipment, which is generally made of high-strength thick steel plates through precision welding, stress relief annealing and precision machining. This manufacturing process can effectively eliminate the internal stress of the frame, avoid deformation and vibration caused by long-term high-load operation, and ensure the geometric accuracy and stability of the equipment. The frame is designed with a symmetrical structure on both sides, equipped with high-precision linear guide rails, ball screws and servo drive systems for the movement of the grinding spindle group, which can realize the precise adjustment of the distance between the two sides of the grinding heads and the feeding accuracy of the spindles. The gantry-type reinforced structure is adopted for large-scale models, which can bear the weight of large-format glass and high-speed grinding load, and is suitable for the processing of architectural curtain wall glass and automotive large glass.
2.2 Double-Side Grinding Spindle Group
The double-side grinding spindle group is the core execution component of the equipment, which is symmetrically arranged on both sides of the conveying channel, and each side is equipped with 8-12 high-speed precision spindles, which are divided into coarse grinding spindles, fine grinding spindles, chamfering spindles and polishing spindles according to the processing process. The spindles are driven by high-performance servo motors, with a rotation speed of 2800-3600rpm, and have the characteristics of low vibration, low noise and high stability.
The coarse grinding spindle is equipped with diamond grinding wheels with a grit size of #100-#180, which is used to quickly remove the sharp edges, burrs and micro-cracks of the cut glass, and form the basic straight edge profile; the fine grinding spindle adopts resin-bonded diamond grinding wheels with a grit size of #240-#400, which refines the edge surface, eliminates grinding marks and improves the dimensional accuracy of the edge; the chamfering spindle is equipped with a special chamfering grinding wheel, which can process 45° chamfers, rounded corners and other edge shapes according to the process requirements, with a chamfer width adjustable from 0.5mm to 3mm; the polishing spindle is equipped with cerium oxide polishing wheels or resin polishing wheels, which can polish the glass edge to an optical-grade finish with a surface roughness Ra ≤ 0.15μm, meeting the high surface quality requirements of high-end glass products. The two-side spindle groups can be independently adjusted in speed, feeding amount and grinding pressure, and can realize the synchronous processing of different edge processes on both sides of the glass, with strong process adaptability.
2.3 Pneumatic Clamping and Conveying System
The pneumatic clamping and conveying system is responsible for the stable fixation and continuous conveying of glass, which is the key to ensuring the processing accuracy and efficiency of the equipment. The system consists of a pneumatic power unit, precision pressure regulating valves, pneumatic clamping cylinders, wear-resistant clamping jaws, a variable-frequency conveying belt and a drive motor.
The pneumatic clamping mechanism adopts a flexible clamping design, and the clamping jaws are lined with polyurethane or rubber materials, which can apply uniform and adjustable clamping pressure (0.2-0.6MPa) according to the thickness of the glass (3-25mm), avoiding glass surface damage and edge chipping caused by excessive pressure, and ensuring the stable positioning of the glass during high-speed grinding. The conveying system adopts a double-sided synchronous conveying belt driven by a variable-frequency motor, with a conveying speed adjustable from 1m/min to 8m/min, which can be matched with different processing speeds and glass thicknesses. The conveying belt is made of anti-slip and wear-resistant materials, which can prevent glass slippage and scratching during the conveying process, and realize the continuous and stable conveying of glass from the feeding end to the discharging end.
2.4 PLC Intelligent Control System
The double edge straight glass grinding machine is equipped with a high-performance PLC (Programmable Logic Controller) and a touch-screen human-machine interface (HMI), which realizes the intelligent control of the entire processing process. The control system supports the setting and storage of processing parameters such as glass thickness, edge width, chamfer size, spindle speed, conveying speed and grinding pressure, and can store more than 100 groups of process parameters, which is convenient for quick switching of different glass specifications and reduces the equipment adjustment time.
The system has real-time monitoring functions, which can display the operating status of each spindle, pneumatic pressure, conveying speed, cooling system flow and other parameters in real time, and has fault self-diagnosis and alarm functions. When equipment failures such as spindle overload, air pressure abnormality, cooling blockage and glass jamming occur, the system will automatically stop and send out an audible and visual alarm, and display the fault location and solution on the touch screen, which is convenient for operators to troubleshoot. Advanced models are also equipped with Ethernet communication and remote control functions, which can realize remote monitoring, parameter adjustment and fault diagnosis, and integrate with the glass processing production line to form an intelligent manufacturing system.
2.5 Cooling and Dust Removal System
During the glass grinding process, the friction between the grinding wheel and the glass will generate a lot of heat, and a large amount of glass powder will be produced at the same time. The cooling and dust removal system is designed to reduce the grinding temperature, lubricate the grinding contact surface, and remove glass powder, which is an important guarantee for improving the processing quality and extending the service life of the grinding wheel.
The cooling system adopts a closed-loop water circulation design, and high-precision nozzles are installed at each grinding spindle to spray cooling liquid (pure water or special glass grinding coolant) directly onto the grinding contact area, which can quickly take away the grinding heat, prevent the glass edge from cracking due to thermal stress, and reduce the wear of the grinding wheel. The dust removal system is integrated with the cooling circulation system, and the glass powder and debris generated during grinding are flushed into the sedimentation tank by the cooling liquid, and then filtered and recycled through a multi-stage filtration device (filter precision ≤ 5μm), which reduces water consumption and environmental pollution, and avoids the blockage of precision components by glass powder.
2.6 Glass Positioning Mechanism and Safety Protection Device
The glass positioning mechanism is composed of photoelectric sensors, mechanical positioning blocks and pneumatic positioning cylinders, which can realize the precise positioning of the glass before entering the grinding area, with a positioning accuracy of ±0.01mm, ensuring the consistency of the processing size of the two sides of the glass. The safety protection device includes a safety grating, an emergency stop button, a protective cover and an interlock device, which can prevent operators from being injured by the rotating grinding wheel and the moving glass during the operation of the equipment, and meet the safety production standards of industrial machinery.
3. Working Principle
The working process of the double edge straight glass grinding machine is a highly coordinated operation of mechanical transmission, pneumatic control, electrical control and grinding processing, which is divided into six stages: glass feeding, precise positioning, pneumatic clamping, double-side synchronous grinding, glass release and discharging, and the entire process is automatically completed under the control of the PLC system.
3.1 Glass Feeding and Precise Positioning
The operator places the cut flat glass on the feeding conveyor belt, and the conveyor belt transports the glass to the positioning area. The photoelectric sensor detects the position of the glass edge and transmits the signal to the PLC system. The PLC controls the pneumatic positioning cylinder to push the glass to the preset positioning position, and the mechanical positioning block assists in fixing, realizing the precise alignment of the glass and the grinding spindle group, ensuring that the two parallel edges of the glass are accurately aligned with the grinding heads on both sides.
3.2 Pneumatic Clamping
After the glass is positioned accurately, the PLC system sends a command to activate the pneumatic clamping system. The pneumatic cylinders on both sides drive the clamping jaws to move towards the glass, and apply uniform clamping pressure according to the set parameters to fix the glass firmly. The clamping pressure is adjusted in real time by the precision pressure regulating valve to adapt to glass of different thicknesses and materials, avoiding glass damage and ensuring that the glass does not shift during the grinding process.
3.3 Double-Side Synchronous Grinding
After the clamping is completed, the PLC system starts the double-side grinding spindle group and the conveying system at the same time. The glass moves forward at a set conveying speed, and the grinding spindles on both sides feed radially at the same time. The grinding wheels make contact with the two parallel edges of the glass, and complete the processes of coarse grinding, fine grinding, chamfering and polishing in sequence according to the preset process flow.
During the grinding process, the cooling system sprays cooling liquid continuously to cool and lubricate the grinding area, and the dust removal system synchronously recovers the glass powder. The PLC system monitors the operating parameters of each spindle and the conveying system in real time, and automatically adjusts the spindle speed, feeding amount and grinding pressure to ensure the stability of the grinding process and the consistency of the processing quality of the two edges of the glass.
3.4 Glass Release and Discharging
When the glass passes through the entire grinding area and completes all edge processing, the photoelectric sensor at the discharging end sends a signal to the PLC system. The PLC controls the pneumatic clamping cylinder to retract, the clamping jaws release the glass, and the conveying belt transports the processed glass to the discharging area. At this point, a complete processing cycle is completed, and the equipment immediately enters the next processing cycle to realize continuous automatic production.
4. Core Technical Parameters
The core technical parameters of the double edge straight glass grinding machine determine its processing capacity, accuracy and application scope. The following are the main technical parameters of mainstream models in the market:
| Parameter Category | Specific Indicators | Parameter Range |
|---|---|---|
| Processing Scope | Applicable glass thickness | 3-25mm |
| Minimum processing glass size | 50mm×50mm | |
| Maximum processing glass size | Customizable (up to 3000mm×2000mm) | |
| Processing edge type | Straight edge, 45° chamfer, rounded edge | |
| Chamfer width adjustment range | 0.5-3mm | |
| Processing Accuracy | Edge dimensional accuracy | ±0.01mm |
| Parallelism of double edges | ≤0.02mm/m | |
| Surface roughness after polishing | Ra≤0.15μm | |
| Chamfer angle accuracy | ±0.5° | |
| Operational Parameters | Spindle rotation speed | 2800-3600rpm |
| Conveying speed | 1-8m/min | |
| Pneumatic system working pressure | 0.2-0.6MPa | |
| Compressed air consumption | ≤1.5L/min | |
| Power Parameters | Total installed power | 22-30kW |
| Power supply | 380V/50Hz, three-phase four-wire | |
| Physical Parameters | Overall dimensions (L×W×H) | 7.5-8.5m×1.8m×2.8m |
| Equipment weight | 4000-6000kg |
These technical parameters reflect the high precision, high efficiency and wide adaptability of the double edge straight glass grinding machine, which can meet the processing needs of different glass specifications and different application scenarios.
5. Industrial Application Scenarios
Due to its advantages of high efficiency, high precision and automation, the double edge straight glass grinding machine is widely used in various fields of flat glass deep processing, and has become the core equipment of glass processing production lines in many industries.
5.1 Architectural Decoration Industry
In the architectural glass processing field, the double edge straight glass grinding machine is mainly used for the edge processing of architectural curtain wall glass, doors and windows glass, partition glass, shower room glass and glass railing. The equipment can process high-precision straight edges and 45° chamfers for large-format architectural glass, which not only improves the aesthetic appearance of the glass, but also enhances the mechanical strength and safety of the glass, meeting the safety standards of architectural glass. The high processing efficiency of the equipment can meet the large-scale production needs of architectural glass projects, and is widely used in the processing of glass for high-rise buildings, commercial complexes, hotels and residential buildings.
5.2 Automotive Glass Manufacturing
Automotive glass (windshield, side window glass, rear window glass, sunroof glass) has extremely high requirements for edge processing accuracy and quality. The double edge straight glass grinding machine can realize the high-precision grinding and polishing of the two parallel edges of automotive glass, ensure the dimensional accuracy and sealing performance of the glass, and facilitate the installation of glass and automotive frames. The equipment can process various types of automotive glass such as tempered glass and laminated glass, and is an indispensable processing equipment in the automotive glass production line.
5.3 Home Appliances and Furniture Industry
In the home appliance industry, the equipment is used for the edge processing of glass panels of refrigerators, washing machines, ovens, microwave ovens and display screens, and the polished glass edge improves the safety and aesthetic appearance of home appliance products. In the furniture industry, it is mainly used for the processing of glass tabletops, cabinet glass doors, display cabinet glass and decorative glass parts, and the processed glass has smooth edges and high dimensional accuracy, which meets the production needs of high-end furniture.
5.4 Photovoltaic New Energy Industry
With the rapid development of the photovoltaic industry, the demand for photovoltaic glass is increasing year by year. The double edge straight glass grinding machine is used for the edge processing of photovoltaic glass panels, which can eliminate the micro-cracks on the glass edge, improve the mechanical strength and weather resistance of the photovoltaic glass, and ensure the service life of photovoltaic modules. The high-efficiency processing capacity of the equipment can meet the large-scale production needs of photovoltaic glass manufacturing enterprises.
5.5 Electronic and Optical Glass Industry
For electronic glass (smart phone cover glass, tablet display glass, TV panel glass) and optical glass (optical lens substrate, instrument glass), the double edge straight glass grinding machine can achieve ultra-precision polishing of the glass edge, with a surface roughness Ra ≤ 0.1μm, meeting the requirements of light transmittance and surface smoothness of electronic and optical glass. The equipment's high-precision positioning and processing capabilities ensure the consistency of small-sized electronic glass processing, and are suitable for the mass production of electronic and optical glass components.
6. Performance Advantages
Compared with the traditional single-side glass grinding machine and manual edging process, the double edge straight glass grinding machine has obvious performance advantages, which can effectively improve the production efficiency and product quality of glass processing enterprises and reduce production costs.
6.1 High Processing Efficiency and Continuous Production Capacity
The double edge straight glass grinding machine can process two parallel edges of glass at the same time, and complete multiple processes such as coarse grinding, fine grinding, chamfering and polishing in one pass, which improves the processing efficiency by 50%-80% compared with the single-side grinding machine. The automatic feeding, positioning, clamping, grinding and discharging system realizes unmanned continuous production, with a processing capacity of 100-150 pieces per hour (for standard 12mm thick glass), which can meet the large-scale production needs of enterprises.
6.2 High Processing Precision and Product Consistency
The equipment adopts high-precision linear guide rails, servo drive systems and PLC intelligent control, with an edge dimensional accuracy of ±0.01mm and a double-edge parallelism of ≤0.02mm/m, which far exceeds the processing accuracy of manual and single-side grinding machines. The synchronous processing of the double-side spindle group ensures the consistency of the processing quality of the two edges of the glass, and the polished edge surface is smooth and scratch-free, which improves the qualification rate of glass products to more than 99.5%.
6.3 Wide Adaptability to Glass Specifications and Types
The equipment can process glass with a thickness of 3-25mm and a size of 50mm×50mm to 3000mm×2000mm, and can adapt to various types of flat glass such as float glass, tempered glass, laminated glass, Low-E glass, photovoltaic glass and electronic glass. The spindle speed, grinding pressure, conveying speed and chamfer size can be flexibly adjusted according to the processing requirements, with strong process adaptability and can meet the diversified processing needs of enterprises.
6.4 High Degree of Automation and Easy Operation
The PLC touch-screen control system simplifies the operation process, and operators can complete the parameter setting and equipment start-stop only through simple training. The system has functions such as parameter memory, fault self-diagnosis and automatic alarm, which reduces the labor intensity of operators and the dependence on skilled workers. The integration with the automatic loading and unloading equipment can form a fully automatic glass processing production line, realizing the intelligent manufacturing of glass processing.
6.5 Low Production Cost and Long Service Life
The one-pass processing of the equipment reduces the number of glass clamping and positioning, reduces the loss of glass caused by repeated handling and clamping, and saves labor costs. The closed-loop cooling and dust removal system reduces the consumption of cooling liquid and the wear of grinding wheels, and the service life of high-quality diamond grinding wheels can reach more than 10,000 hours. The high-strength frame structure and high-quality components ensure the long-term stable operation of the equipment, with a service life of more than 15 years under normal maintenance, which reduces the equipment replacement and maintenance costs of enterprises.
6.6 Good Safety and Environmental Protection Performance
The equipment is equipped with a complete safety protection device, which can effectively prevent safety accidents during the operation of the equipment and meet the industrial safety production standards. The closed-loop cooling and dust removal system recycles the cooling liquid and collects the glass powder, which reduces the discharge of waste water and waste residue, realizes green and environmentally friendly production, and complies with the national environmental protection policies.
7. Equipment Maintenance and Troubleshooting
In order to ensure the long-term stable operation of the double edge straight glass grinding machine and maintain its processing accuracy, it is necessary to carry out standardized daily maintenance and timely troubleshooting. The maintenance of the equipment is divided into daily maintenance, weekly maintenance and monthly maintenance, and corresponding solutions are formulated for common faults.
7.1 Daily Maintenance
After each shift, clean the glass powder and debris on the surface of the equipment, grinding spindles, conveying belts and cooling nozzles with compressed air and a clean cloth; check the liquid level of the cooling liquid, and add or replace the cooling liquid in time if it is insufficient or contaminated; check the pneumatic system pressure to ensure that it is within the normal range, and check for air leakage at the cylinder joints and valves; check the wear of the grinding wheels, and replace the grinding wheels that are seriously worn or chipped in time; lubricate the linear guide rails and ball screws with special lubricating oil to ensure smooth movement.
7.2 Weekly Maintenance
Drain the water and impurities in the air storage tank of the pneumatic system, and replace the pneumatic filter element; check the tightness of the spindle fixing screws and the conveyor belt tension, and adjust them in time if they are loose; calibrate the positioning accuracy of the photoelectric sensor and the mechanical positioning block; clean the filter device of the cooling and dust removal system to prevent blockage; check the operation of the servo motor and the PLC control system, and test the emergency stop and alarm functions.
7.3 Monthly Maintenance
Conduct a comprehensive inspection of the main frame, grinding spindle group, conveying system and electrical system of the equipment, check for deformation, wear and damage of components, and replace damaged parts in time; replace the lubricating oil of the spindle bearing and the gearbox; calibrate the processing accuracy of the equipment, including edge dimensional accuracy, double-edge parallelism and chamfer angle accuracy; update the PLC system software and back up the process parameters; conduct a comprehensive safety inspection of the equipment to ensure the normal operation of the safety protection device.
7.4 Common Faults and Troubleshooting
- Uneven processing of double edges: The main reasons are inconsistent feeding of double-side spindles, misalignment of glass positioning and uneven clamping pressure. The solutions are to calibrate the feeding accuracy of the double-side spindles, adjust the glass positioning mechanism and the pneumatic clamping pressure.
- Glass edge chipping and cracking: The main reasons are excessive grinding pressure, insufficient cooling liquid, hard glass material and glass positioning deviation. The solutions are to reduce the grinding pressure, check the cooling nozzle blockage, replace the appropriate grinding wheel and re-calibrate the glass positioning.
- Low surface roughness after polishing: The main reasons are worn polishing wheels, incorrect spindle speed and contaminated cooling liquid. The solutions are to replace the polishing wheels, adjust the spindle speed and replace the cooling liquid.
- Conveyor belt slipping and jamming: The main reasons are worn conveyor belt lining, insufficient tension and excessive glass weight. The solutions are to replace the conveyor belt lining, adjust the belt tension and control the glass processing size within the equipment's bearing range.
- PLC system fault and alarm: The main reasons are parameter setting error, electrical component damage and communication failure. The solutions are to check and correct the process parameters, replace the damaged electrical components and check the communication line connection.
8. Future Development Trends
With the continuous progress of science and technology and the changing market demand, the double edge straight glass grinding machine is developing in the direction of higher intelligence, higher precision, energy saving and environmental protection, and multi-functional integration, and its technical level and application scope will be further improved and expanded.
8.1 Intelligent and Digital Upgrading
In the future, the double edge straight glass grinding machine will integrate more intelligent technologies such as artificial intelligence, machine vision and big data. The machine vision system will automatically detect the size, thickness, edge defects and processing quality of the glass, and the artificial intelligence algorithm will optimize the processing parameters in real time to realize the adaptive processing of different glass. The big data platform will collect and analyze the equipment operation data, realize predictive maintenance and production scheduling optimization, and improve the overall efficiency of the production line. The digital twin technology will be applied to simulate the equipment operation and processing process, and realize the virtual debugging and process optimization of the equipment.
8.2 Ultra-Precision Processing Technology
With the development of electronic, optical and semiconductor industries, the demand for ultra-precision glass processing is increasing. The double edge straight glass grinding machine will develop towards higher precision, with the edge dimensional accuracy reaching ±0.005mm and the surface roughness Ra ≤ 0.05μm. The new type of nano-grinding wheel and high-precision spindle technology will be applied to realize the ultra-precision grinding and polishing of thin glass and special-shaped glass, meeting the processing needs of high-end electronic and optical products.
8.3 Energy Saving and Environmental Protection Optimization
In response to the national dual-carbon target and environmental protection requirements, the equipment will adopt energy-saving motors, high-efficiency drive systems and intelligent energy management systems to reduce power consumption by 30%-40%. The cooling and dust removal system will be further optimized, adopting a zero-discharge closed-loop circulation system and glass powder recycling technology to realize the recycling of waste resources and reduce environmental pollution. The equipment will use more environmentally friendly materials and manufacturing processes to realize the green design and production of the equipment.
8.4 Multi-Functional Integration and Flexible Manufacturing
The future double edge straight glass grinding machine will integrate multiple processing functions such as straight edge grinding, chamfering, polishing, drilling and slotting, and realize the one-stop processing of glass. The modular design will be adopted, and the spindle group and processing module can be quickly replaced and combined to adapt to the processing of different edge shapes and glass types. The equipment will have the ability of flexible production, which can quickly switch between different production tasks and meet the personalized and customized processing needs of the market.
8.5 Global Market Expansion and Localized Innovation
With the rapid development of the global glass processing industry, especially in emerging markets such as Southeast Asia, Latin America and Africa, the demand for high-performance double edge straight glass grinding machines is growing. Domestic equipment manufacturers will increase R&D investment, break through the core technology bottleneck, improve the quality and performance of the equipment, and expand the international market share. At the same time, localized innovation will be carried out according to the market demand and processing standards of different regions, and customized equipment and solutions will be provided to meet the diversified needs of global customers.
9. Conclusion
The double edge straight glass grinding machine, as a key equipment in the modern glass deep-processing industry, has revolutionized the traditional glass edge processing mode with its high efficiency, high precision, automation and intelligence, and has become an important support for the high-quality development of the glass processing industry. Its structural design, technical performance and application scope have been continuously improved and expanded, and it plays an irreplaceable role in architectural decoration, automotive manufacturing, home appliances, photovoltaic and other fields.
In the future, with the continuous innovation of intelligent manufacturing technology, energy saving and environmental protection technology and ultra-precision processing technology, the double edge straight glass grinding machine will move towards a higher level of intelligence, precision and greenness, and provide more efficient and high-quality processing solutions for the glass processing industry. For glass processing enterprises, adopting advanced double edge straight glass grinding machines is an important way to improve production efficiency, reduce production costs and enhance market competitiveness. For equipment manufacturers, continuous technological innovation and product upgrading are the core driving forces to seize market opportunities and promote the sustainable development of the industry.
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