1. Thoroughly understand product specifications. 2. Business schedule. 3. Production management schedule. 4. Thoroughly implement the business schedule and track the production management schedule. 5. Formulate product specifications and quality specifications. 6. Thoroughly implement the delivery schedule and quality assurance specifications. 7. Procurement, market development, supplier development, new product development. 8. Make a BOM table. 9. Buyer offer (make PPT) and negotiate with supplier (according to BOM). 10. Thoroughly review and improve insufficient products. 11. Supplier audit, evaluation and factory inspection assistance.