The applicant applies for another patent based on the patented technology that has been applied but not disclosed. How to quote?

In Patent 2, you can first point out that your company has submitted the patent 1, briefly explain the invention content of the patent 1 in the background (that is, the main intention of the invention), and then describe the invention background of Patent 2 according to the patent 1. For example, you can refer to CN20 1 120382608.7 (filing date: 201-10120328276.4) and apply for your own patent. CN20 1 120382608.7 was not published yet.