what documents do you need from my side to damascus embassy to give my family visa, and what kind they have to apply for to get letter the residence permit after entry?

Dear China consular have our best regards , i have a trading company by my own name in PRC and also i have the residence permit and now i want to get my family ( my wife and my children ) to come to live with me , so thanks a lot for your cooperation .
best regards .
MHD Izzat .
008618657315323.