We are the professional supplier of all kinds of fastners,bolts,nuts,Our Products confirmed with GB(National Standard),ISO(International Standard),DIN(German Standard),ANSI (U.S. Standard),BS(British Standard),JIS(Japanese Standard)etc. as well as those with special requirements. Products made of carbon steel, alloy steel.Stainless steel,brass and so on.Products with various surface treatments:auto-black,zinc-plating,brass-plating,nickel-plating,phosphating,heated zinc-plating,dacromnet etc. Products packed: in small package in large paper box, in box without small packages and so on.