金(jin)剛石(shi)(shi)砂輪(lun),超硬磨料(liao)磨具(ju),CBN砂輪(lun),藍寶石(shi)(shi)行(xing)業背(bei)減薄砂輪(lun),藍寶石(shi)(shi)行(xing)業倒角砂輪(lun),藍寶石(shi)(shi)行(xing)業樹(shu)脂(zhi)銅(tong)盤等(deng)