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高鈷鉆頭(tou)、硬質合金鉆頭(tou)能鉆不銹鋼。硬質合金鉆頭(tou) ...
許多客戶(hu)經常(chang)講進口硬質合(he)金鉆(zhan)頭(tou)(tou)和鎢鋼銑(xian)(xian)刀(dao)比較耐用，國產(chan)的鉆(zhan)頭(tou)(tou)和銑(xian)(xian)刀(dao)耐用度太差，以前國人百思(si)不得(de)其解， ...
