1. Dust-Free Workshop: All staff must wear specified uniforms before entering the workshop.

2. Strict rules of operation: All operation need be conducted strictly as process rules.

3. New testing piece: Testing piece must be produced before a new batch of material is used for mass production.

4. Double Quality Checking: Inspection for semi-finished and finished products are essential.

5. Safe package and delivery: To ensure that clients receive our goods with good looks and good quality.