ygs67 发表于 2015-12-10 22:32:37

ASTM B42-15a Standard Specification for Seamless Copper Pipe, Standard Sizes

ASTM B42-15a Standard Specification for Seamless Copper Pipe, Standard Sizes

admin 发表于 2015-12-11 09:36:50

谢谢您的分享，金币已奖励!
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