供应C28000,C34500,C35000,铜合金
供应美国铜合金***1500***2200***2250***3000***3400***4300***4400***4500***6200***6400***6500***6600***6700***8200***8500C50500C51000C51100C52100C52400C53200C53400C54400C60600C60800C61000C61300C61400C61900C62300C62400C63000C693200C64200C64210C64700)