... Passed GB/T19001 and ISO9001 IntroductionHuzhou Cemented carbide Co., Ltd can manufacture various mining tools ... and board hammer etc. They can be applicable for tunneling works, geological prospecting, oilfield development and ... line or by e-mail.The grades which used more frequently are YG3, YG6, YG8, ... YG3X, YG6X,YG8X, YT5, YT14, YT15 ... etc. Their physical & mechanical propeties are as ...