Qingdao Fortune Anchor Chain Co.,Ltd can produce the round link chain, hot dip galvanized link chain, electro galvanized link chain, proof coil chain, welded link chain with basis diameter from 3mm to 20mm. it includes the ISO,DIN,BS,JIS,ASTM standard etc.  Emai: qdyingxin@yahoo.com , mooringchain@yahoo.com  , barronqfac@vip.sina.com