What does it mean to settle in Shenzhen qianhai business secretary co., ltd?

This means that this enterprise is under the jurisdiction of Qianhai Administration, not Shenzhen Municipal Market Supervision Administration. You need a red lease contract to stay in the office of Qianhai Business Secretary. There should be a real address, but not necessarily in qianhai. If you want to know whether this company is abnormal, you can find it on Shenzhen Industrial and Commercial Network. This address is not a problem.