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楊忠義
USM for WC! This is the new method for manufacture WC metal direct by diamond grinding tool. /利用超音波輔助直接使用鑽石磨棒加工鎢鋼材料。聲瑋科技有限公司______________________________地址:高雄市燕巢區鳳東路312巷18號電話:07-6153612傳真:07-6156428信箱:sonywave.tw@gmail.com