We are Qingdao Fortune Anchor Chain Co Ltd, we are one of the Chinese largest stainless steel anchor chain factory, we can produce the stainless steel anchor chain, stainless steel mooring chain, stainless steel buoy chain, stainless steel open link chain, stainless steel 304 anchor chain, stainless steel 316 anchor chain, stainless steel 316L anchor chain and the stainless steel anchor chain's normal diameter is from 12mm to 70mm now. If the larger size, we can make to order. We can supply the quality certificates as ABS,BV,CCS,DNV,GL,RS,LR,RINA  etc for the anchor chain. Pls contact with us   [email protected]