... medicial instument,the special machine parts,the cutting tool and so on. Advantage1.For the polishing effect ... beveling machine,straight line edger,irregular shape machine,multi-functional grinding machineMarketItaly, Germany, Czech Republic, Russia, USA, Colombia, ... performance.Company IntorductionEstablished in 1998, Zhengzhou Longda Abrasives Co., Ltd is a specialized enterprise that engages in the ...