iron and steel . heat treated special steels for quenching after surface treating . types 鋼鐵.表面處理后淬火用熱處理的特殊鋼.類型
formation, soldering, coating, surface treating and related business for pipes, metal bars and metal sheeting 各種管類條類金屬鈑金之成型加工焊接及涂裝業(yè)務(wù)表面處理及業(yè)務(wù)
commercial dental archwires were surface treated with anodizing processes, and colorful dental archwires were prepared 摘要以陽極處理的方法對市售的牙齒矯正線進行表面處理,以得到彩色的牙齒矯正線。