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cc523pate 发表于 2020-11-3 21:59:40

ASTM A179/A179M-19 Standard Specification for Seamless Cold-Drawn Low-Carbon

ASTM A179/A179M-19 Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes

admin 发表于 2020-11-6 13:37:23

谢谢您的分享,金币已奖励!

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