This depends on the specific test items. If it is military products, 54 companies, 13 companies, Huace Junrui, CLP, etc. They are all well done, with deep background, strong technical force and equipment ability. If it is a test in other aspects, you can consult Huace Junrui. Huace has more than 100 laboratories in China, and each laboratory is responsible for different specific projects. There are two laboratories in Shijiazhuang, which should help you.