China Product Network

BB is the exchange of products, services and information between enterprises through the Internet. The main models of websites are divided into three categories: BB websites for large enterprises, BB websites operated by third parties, and industry ecological BB websites. The BB website in the growth stage has formed a certain scale and provides users with more free permissions. It is the best target for us to use for free. Of course, even the mature BB paid website still has some resources that can be used for free. of.