How to renew VISA for my wife and child (dependent type)

Suresh, they hold S1 type and residence permit, right? If yes, you can renew the residence permit for them. You can renew that at the exit and entry administration of the local PSB within China. First, prepare the relevant documents, their passports, the application forms, passport-style photos, valid registration forms of temporary residence, an invitation letter from you and copies of your passport and residence permit, as well as relationship certificates. Next, go to the local PSB to renew their residence permits.