... patent coating technique,cost effective ISO standard Specification of nano-ceramic superhard coating gear hob cutter,gear milling cutter,gear cutter ... ,000 for gear cutter hob and pinion shape cutter. 60% ceramic coating gear cutter hob import from Japan and Germany. Max ... protect our eyes.Xi’an Yujie Surf-Tech Co.,LtdAdd: No.25,GaoXin 1st Road, Hi-tech zone,Xi’an,P.R.ChinaTel ...