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Civil defense. Personal respiratory protection equipment. Filtering gas masks and additional cartridges. Requirements for quality indicators for storage. The procedure for conducting laboratory tests. Control methods

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Centering joinings with screw fixing for heated core boxes. Design and dimensions

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Slotted raised countersunk head screws. Product grade A

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Pumps and pump units for pumping of liquids. General safety requirements

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Protection of information. Basic terms and definitions

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Radiometers for metering covers on alfa and beta activity dirt. General technical requirements and test methods

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