GB - Chinese national standards

Low ambient temperature air source heat pump water chillingpackages—Part 2Heat pump water chillingpackages for household and similar application

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Direct evaporation all fresh air handling units

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Unit coolers for refrigeration

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Safety requirements for unitary air-Conditioners

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Safety requirements for water chillers (heat pump) using the vapor compression cycle

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Hydraulic fluid power - Filters - Test method for differential pressure devices

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Hydraulic fluid power systems - Assembled systems - Methods of cleaning lines by flushing

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Optical measurement specification of 3D geometry for forgings/stampings and the dies

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The quality control criterion of forging technology

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General checking standard for steel open die forgings

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