1. Strictly control the procurement and acceptance of raw materials;

2. Ensure process documentation and implementation are effective;

3. Focus on product quality inspection;

4. Do a good job in quality prevention and improvement.

5. Conformity assessment on suppliers: including supplier survey and visit, supplier material trial, etc. According to the survey and the results of visit and trial, make a comprehensive assessment and determine the qualified suppliers.

6. The implementation of procurement, strictly in the assessment of qualified suppliers for procurement, if there is no need for qualified suppliers to purchase the material, the implementation of interim assessment.