What is the mechanical treatment of Shandong Jin Peng Needle Industry Group Co., Ltd.

It's a little difficult to get a detailed answer here. If you have the opportunity to go to the company for a field trip and see who is around the company, such as doormen, security guards and shopkeepers, you may learn something. It is best to meet the employees of the unit. This information is more objective and true. Personal experience for reference, say your own point of view. After all, I'm not in your environment, so it's hard to avoid thinking wrong and saying wrong.