Hello Currently working in Wuxi and having Z visa and residence permit.

Shiva, it should be your wife who does the application in India. If she plans to stay for a long time, the S1 type should be applied for. If she just stay for a few months and then go back home, the S2 type should be her choice. First get the following paperwork ready, such as passport, a photocopy of the passport, application form, photo affixed on the form, photocopy of your passport and residence permit, your invitation letter, the original and photocopy of your marriage certificate, your wife’s personal statements, and other documents required by the embassy. Then go to the CVASC branch in India and submit the application.