We are one of the best exporters n China.We have two sales departments. Industry department mainly deals export of seamless steel tube, and agriculture department to export Ammonium Sulfate.We export large quatity to many countries with high quality and competetive pricce.Our manufactures have passed the ISO9001-2000 QUALITY SYSTEM APPROVAL.If you need some further information, welcome to contact me.Best RegardsYours sincerelyAlvin LiuE-mail: jet911 at gmail comTel: 0086-512-65112849