Zailai steel implements good management policies and has passed ISO9001:2008 quality system certification. The products comply with GB/T3191-1998, GB6892-2006, GB3190-2008 and other standards. It has been recognized by relevant national departments and has relevant certificates such as the company's product import and export operation rights. We will provide our users with the highest quality products, the most reasonable prices and the most complete services. We sincerely welcomes calls, visits, inquiries and negotiations from all the new and old customers."