求翻译：B to B 房地产电子商务涉及的面非常广，从房地产的开发、建造开始，直到房屋最终装潢，要涉及到大量房地产行业的相关企业。目前，B to B 房地产电子商务已经主要运用在建材以及装潢等行业。通过企业间建立的电子化交易平台，企业供应链的管理变的容易有效，直接成本和管理经营成本在很大程度上得到了降低。是什么意思？

In the presence of b to b e-commerce involving real estate is very wide, starting from a real estate development, construction, until the final decoration of housing, to involve a lot of real estate related businesses. Currently, b to b e-commerce has been mainly used in building materials and decoration of the real estate industry. Through the electronic trading platform for enterprises to establish, Enterprise supply chain management became easy and effective, direct operating costs and management costs have been reduced to a large extent.