B2B trading platform for product.

I want a B2B marketplace set up. Think Alibaba but the profile I want is much more detailed. The site pages are much less cluttered I want no ads at all on the site. I want to be able to control all trades. Only members can view other members details. Only members approved to trade can do so and only up to a certain limit. Members can communicate with each other through the site but I need translation tools for communications. Each member can add products and these can be bid on by other members and once the price is right accepted by the seller. This then opens up a trading deal where I need to be in control and need to approve the deal. I want members to be able to add classified ads. I want to be able to edit the pages, edit the categories and edit the profiles that are added. The profile should be able to be set up from a list of questions that I can add and edit. Photos can be added by members. The first page should be blank with only a log in page. Members will get their log in direct from me.