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GB150 has legal effect on us and is a compulsory product standard for pressure vessels
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?
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2020-01-15
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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
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专业蓝领30年
TSG开头的才是强制的