if people from other units want to check the approval number of their own units, they also need to obtain the industrial and commercial files to check. If litigation is involved, you can apply to the industrial and commercial bureau for inquiry with the filing certificate and power of attorney.
if you entrust a lawyer to inquire, you usually need a record certificate, but there are exceptions in individual industrial and commercial bureaus. For example, Tianjin Industrial and Commercial Bureau stipulates that if the lawyer has inquired about the industrial and commercial files of the enterprise, he only needs to provide the lawyer's practice certificate and letter of introduction.
there is another way. if you apply to the court for investigation and evidence collection in the course of litigation, it is up to the court to decide whether it is allowed or not.