Research&Development Control 1. Record technical parameters , establish drawing file.
2. Make process documents.

Material Control 1.Select reliable suppliers
2.Run strict incoming quality controls and make records.
3.Keep core components at constant temperature and humidity.

Production Control 1. Spot inspection of production equipment
2. First/last inspection and records.

Performance Check Control 1. Spot inspection of test equipment
2. 100% final performance inspection

Appearance Inspection Control 1. Product appearance inspection
2. Packaging appearance inspection