Will the employees of Hangzhou Greentown Property Company know the detention history when they join the company?

No, according to the provisions of the Administrative Punishment Law, people who have been administratively detained, the public security organs that have imposed detention punishment, and the "illegal and criminal inquiry system" of the public security network can all be found, but they will not be made public, and ordinary units and individuals cannot inquire. Usually, the administrative criminal punishment belongs to the intranet, and the company can't inquire, so the employees of Hangzhou Greentown Property Company will know the detention history when they join the company.