金剛(gang)石(shi)粉,立方(fang)氮化(hua)硼粉,金剛(gang)石(shi)聚晶(jing),金剛(gang)石(shi),立方(fang)氮化(hua)硼復合片。Industrial diamond, CBN (Cubic Boron Nitride), PCD and PCBN
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