Bison has its own global sourcing team who can identify and recommend the best quality steel mills out of China and surrounding countries. Every mill we recommend has always pass the mill audit and site observations. We provide not only the product but also complete program that protect the buyers on the quality concerns and delivery. The primary product we are recommending is extra thin wall stainless steel seamless pipe, extremely purified steel alloy pipe/bar, mechanical tubing both carbon and stainless grade. We know the specification than any other steel traders.