金剛石(shi)及其它超硬材料(liao)、五(wu)金滾輪、磨(mo)料(liao)磨(mo)具、首(shou)飾鑲嵌加工(gong)(gong)、銷售,主要(yao)產品有(you)金剛石(shi)修整(zheng)工(gong)(gong)具、金剛石(shi)研磨(mo)工(gong)(gong)具、金剛石(shi)測量(liang)工(gong)(gong)具、金剛石(shi)刀具四(si)大系列