how can we guarantee quality?

how can we guarantee quality?

how can we guarantee quality?
We have senior design engineer, using advanced facilities and processing technology, to meet our customer requirements. We are strictly to control quality of products, our QC will inspect every section of procedure, include raw material. The company with excellent on-time delivery, a thoughtful customer service. 
Procedures/testing Details
1. Raw material and part inspection
2. QC in every production procedure
3. Semi-product inspection
4. Finished product inspection
5. Packing inspection
6. Testing products at random before delivery