... or drawings.Our products include all kinds of round cutter bit and flat cutter bits for excavate coal machine as the replacements ... U118 ,B47K17H, B47K19H, B47K22H, B43K, B43H, BHR73 etc and coal bolting bit and coal bolting rod.We have exported our products to ... USA, Australia, Brazil, Canada, Korea, Japan, HongKong, Singapore, etc Cutter and ...