steel plate butt-welding pipe fittings 中文意思是什麼
steel plate butt-welding pipe fittings
解釋
鋼板制對焊管件-
1 steel plate butt - welding pipe fittings amendment 1
鋼板制對焊管接頭 -
Steel plate butt - welding pipe fittings
鋼板制對焊管配件
分享友人