1. Material inspection: incoming materials must be strictly control quality.
2. Production check: all of operate and assembly must in accordance with operation instruction
3. The production process check: check every working procedure of correct operation.
4. Test check: for each car to do rigorous testing.
5. Packaging and container loading process: use strong carton and high-quality adhesive tape, to ensure that the packaging carefully without rough handling, 100% guarantee all product packaging is good, no one part is missing.Load the container.