Quality management implementation of "three principles: Does not accept defective products, does not produce defective products, does not outflow defective products.

Procurement: the establishment of a strict raw material inspection system and method of work, does not accept defective products.

Production: according to technical standards and technical requirements of production, technology departments must raise the technical standards of prenatal and process requirements, and related drawings, and to organize full study, production processes, mutual inspection, does not produce defective products.

Test: does not outflow defective products.