The types are as follows: iron chain, copper
chain, copper chain, stainless steel
chain. The syle:pear chain, sideways chain, O type
chain, double buckle chain, cloth chain, key chain, necklace chain,
bracelet chain, decoration Components, gold line chain, twist
chain, gammadia chain, snack chain, circle chain, sheet iron chain,
lobster buckle, spring buckle, key circle, diamond chain
ect,
 there are more than ***0kinds. It is widely
used in handbag, cloth, artcraft, toyes ect