0086 17701706555
jojoruan@heyinsteel.com
35CrMo 4135
8620 20CrNiM
23CrNi3Mo 凿岩
42CrMo SCM44
20CrMo 4118
30CrMo 4130
4340 36CrNiM
联系人:Mrs.Ruan
手机:17701706555
电话:0086 17701706555
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