Raw material quality control
- Conduct strict inspections on incoming raw materials to ensure that they meet quality standards
- Establish a supplier evaluation system to select high-quality and reliable suppliers

Production process quality control
- Set up online inspections for key processes to monitor production quality in real time
- Establish a process record system to trace historical production data
- Regularly maintain production equipment to ensure stable equipment performance

Finished product quality inspection
- Conduct a comprehensive quality inspection before finished products enter storage, covering indicators such as appearance, size, and function
- Establish a sampling inspection system to conduct sampling inspections on batch products
- Rework or scrap unqualified products

Quality problem handling
- Establish a customer feedback mechanism to understand and handle quality problems in a timely manner
- Conduct root cause analysis, formulate corrective and preventive measures, and continuously improve quality control