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防饮用水回流污染设备.非循环回流气隙(无限制).A类.B型
Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B
参考页数:24P.;A4
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Tanks for transport of dangerous goods. Service equipment for tanks. Vapour manifold vent valve
参考页数:14P.;A4
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