1、Fore strict feasibility audit is necessary for new type of samples. R&D department make a strict control for all the processes of designing and making.

2、A new product must pass through auditing twice, and must be approved by customer before we start mass production

3、All the materials must be strict examined before they enter our factory.

4、There are check spots in the key working procedure.

5、From two sides to collect the information to improve our quality. Quality control department charge the production quality, after service department collect the feedbacks from customers.