GB150 has legal effect on us and is a compulsory product standard for pressure vessels

小鱼曾乖乖

GB150在我们具有法律效应，且为强制性的压力容器产品标准。这个对不对？

2020-01-15 Reply

专业蓝领30年

150不是强制的
TSG开头的才是强制的

2020-01-15 08:58:45 Reply

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