B2B Website Design Needed

We are looking for a B2B platform similar to alibaba, made-in-china, etc. We are open to suggestions as well. Clone is allowed but the design should look different than the original site. -Site must be an excellent design and programming -Smart design and easy explorer idea, programming, security, payment system, in several languages supporting with installation, technical support, SEO and logo design. Etc - Programming language suitable for B2B business - Current data is in MS access format. -Can you show me a Demo for the user and admin (front-user, end user, and control panels if you have done similar project? We also have strict deadlines so we need this within 30 days. Full payment will be delivered only when 100% satisfaction. No payment in advance.