haomeialuminumsheet

With increasing market demand for  aluminum roofing sheet   from home and abroad, more and more  aluminum  ro ofing sheet  suppliers  are coming out in China. How to pick out reliable ones from numerous suppliers? First, check whether an  aluminum roofing shee t  supplier  has necessary certificates like CE and ISO. A professional manufacturer with exporting history can not have succeeded without basic certificates. Second, check its gross export. Some suppliers are actually trading companies composed of several people. It may be difficult for them to have ten orders in a year. They may disguise themselves very well, but the customs statistics show everything. In contrast, large manufacturers with mature export branches may have hundreds of orders from only abroad. Many orders are from long term clients and new clients introduced by old clients. They have good reputation and reliable supply system. Third, check the exporting history and ...