GB - Chinese national standards

Lexicography—Basic terminologycommon symbols and Chinese abbreviations

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Pipe fittings of copper and copper alloys - Part 1: Fittings of braze welding type

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Pipe fittings of copper and copper alloys - Part 2: Fittings of press type

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Ships and marine technology - Launching appliances for davit-launched lifeboats

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General specification of marine engine room central control console

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Acetylene cylinders

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Seamless aluminum alloy gas cylinders

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Citizen identification number

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Technical regulations for the working safety of fireworks and firecrackers

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Spine titles on books and other publications

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