Husband on 3 month business trip to China needs to bring family

We are confused as to which type we need to apply for. My husband has been many times for business and I have travelled as a tourist before. We have two children and the trip is for three months with apartment provided. The company my husband works for have a factory in Guangzhou, he will be visiting to assist in several work matters. We would like to apply for a multiple entry as a family as we like to visit Hong Kong regularly. Is this possible? Or does my husband travel on a business F and us separately? I have looked at the different options but cannot work out which we need to apply for. Many Thanks!