... life time 2.wear resistance 3.swift delivery 4.quality and quantity assured 5.100% virgin material About uswe are ... tungsten carbide products such as carbide no standard products, inserts, mining inserts, indexable inserts shims, drilling bits, drawing dies, cold forging dies, ... asK01, K05, K10, K15, K20,K30, P20, P40,etc. China good quality cemented carbide for rock drilling tools ( SGS approved )