... manganese steel parts4.the weight 12tons5.we can supply all kinds of crusher parts, such as jaw plate, ... concave, liner, hammer, cheek plate, blow bar and so on.6.our company have founded 26years, through this ... year hardworking and research, our quality have step on internation way, and specially we have a group ... ISO14001:2004,GB/T28001:2001 Jaw Plate for All Kind of Jaw Plate