Originally founed by some engineers graduated from Tsinghua University ,CHN-TOP SCI&TECH CO;LTD is specializing in ultra hard cutting tools(PCD,PCBN,MD,ND,CVD diamonds) ;high precision equipments(ultra hard tools grinders,vacuum brazing machines,laser cutting machines,polish machines ; CNC process cutting ,brazing,polish service for PCD,PCBN,Cystal and other ultra hard material;distribute some imported compact blanks:(GE,E6,ILJIN,SUMITOMO,EU-DIA).As the professional maker,not only we can offer technical service,but also the ONE STOP SHOP for ultra hard material field with good reputation from global market. Until now there are more than 13 patents cover PCD/PCBN tools making technology. Now our machines competition for world-class products .