0S050銅合金HT100 HT150 HT200 HT250 HT200 HT350 TTH300-06 TTH300-08 KTB350-04 KTB400-05 球墨鑄鐵QT400-18 QT400-15 QT900-2軋輥鋼:9Cr2Mo 9Cr2MoV 718 P20不銹鋼
13352963970李曉愛
laj882025-02-03 13:10:20
0S050銅合金HT100 HT150 HT200 HT250 HT200 HT350 TTH300-06 TTH300-08 KTB350-04 KTB400-05 球墨鑄鐵QT400-18 QT400-15 QT900-2軋輥鋼:9Cr2Mo 9Cr2MoV 718 P20不銹鋼
13352963970李曉愛
laj882025-02-03 13:10:20