1. Material checking: Quality control on new materials, to sort out the qualified and rejected materials before mass

production.
2. Mother boards testing: Every product should be tested before assembling.
3. Inspection of appearance:The tempered glass and painting should be under good conditions before assembling
4. Aging test:All the machines should be made a 24-hour aging test.
5. Quality control : Make sure all finished products to strict test before aging and packing.