- Shanghai Yiyan(TM) Diamond Co., Ltd.
- diamond dresser,diamond indenter,diamond glass drill bit,diamond needle files,daimond engraving pen,drill bit, guide, coated carbide sintered hardness tester indenter, rockwell vickers brinell posalux cutting tool, PCD/CBN PCD reamer cutter, PCD&PCBN internal ex ....
- Address:No. 7799 Hangnan Highway
- Beijing DeMer-River Technology Co., Ltd.
- Testing,Instruments,Tester,Rockwell,Hardness.
- Address:273#, No.85, Hui Long Guan west street, Changping District,