GB - Chinese national standards

Geometrical product specifications(GPS) - Surface texture: Profile method - Surface roughness parameters and their values

Available languages: English, Chinese

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Phosphor Y20 for low-light-level picturetubes and storage tubes

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General specifications for marine pneumatic measurement and control instruments

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Test methods for three-phase asynchronous motors

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Electrical safety of laser equipment and installatins

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Iron ores—Sampling and sample preparation procedures

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Iron ores--Experimental methods for evaluation of quality variation

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Iron ores—Experimental methods for checking the precision of sampling

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Iron oresExperimental methods for checking the bias of sampling

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Iron ores—Determination of the moisture content of a lot

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