We can fulfill dozens of Chinese & international standards(GB,API, ASTM,SAME /ANSI, BS, DIN, JIS,GOST), and customize products with special technical protocols required by our clients.we are focus on the superior quality, fast delivery time and competitive price , thus we are keeping long time business relationship with most of our clients from the Middle East, Southeast Asia, Europe, Africa, South America, Oceania ,and more than 100 countries and regions.