If you need to access enterprise files, you need a letter of introduction issued by a judicial organ or an administrative organ or a lawyer's investigation letter issued by a law firm before the industrial and commercial departments can borrow them.
If the company's official seal is lost, it should be reported to report the loss, and then the business license should be re-engraved. Where it is necessary to register with the public security organ, the official seal shall be engraved after the public security organ has gone through the formalities.
Investigating the information of foreign-invested enterprises is the same as obtaining industrial and commercial files.