... STEEL CASTINGS 2.HIGH RESIST WEARING OEM ALL KINDS OF CRUSHER SPARE PARTS HAMMER 1.hammer,the parts ... is high manganese steel parts4.we can supply all kinds of crusher parts, such as jaw plate, concave, liner ... way, and specially we have a group of engineers who experience are very plenty.6.we ... got the certificate of ISO9001:2002, ISO14001:2004,GB/T28001:2001 OEM ALL KINDS OF CRUSHER SPARE PARTS HAMMER ...