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  •  China "YD" Standards List:
    • Standard  Code Standard English Title Standard Class Order
    NB/T 10605¡ª2021 Specifications for planning and design of land acquisition enterprises for hydropower project construction

    China Energy Industry - YD Standards
    GA 1800.3-2021 Anti-terrorism prevention requirements for public security in power system Part 3: Hydroelectric power generation enterprises

    China Security Industry - YD Standards
    YB/T 028-2021 Hydraulic cylinder for metallurgical equipment

    China Metallurgy Industry - YD Standards
    YB/T 4909.1-2021 Analytical method of calcium-based desulfurizers for pretreatment of iron and steel water - Part 1: Determination of silica content - Perchloric acid dehydration gravimetric method

    China Metallurgy Industry - YD Standards
    YB/T 4908.4-2021 Vanadium aluminium alloys - Determination of hydrogen content - Inert gas fusion infrared absorption method or thermal conductivity method

    China Metallurgy Industry - YD Standards
    HG/T 5888-2021 terephthalaldehyde

    China Chemistry Industry - YD Standards
    HG/T 5847-2021 Acetylated amino oil [4-amino-N-[3-(ethylhydroxyethyl)sulfonyl]phenylbenzamide]

    China Chemistry Industry - YD Standards
    HG/T 5845-2021 N-Ethyl para-ester [4-N-ethylaminophenyl (¦Â-hydroxyethylsulfone sulfate)]

    China Chemistry Industry - YD Standards
    HG/T 5805-2021 D-Dihydrophenylglycine Methyl Deng Sodium Salt

    China Chemistry Industry - YD Standards
    HG/T 5804-2021 D-p-Hydroxyphenylglycine

    China Chemistry Industry - YD Standards
    HG/T 5795-2021 Industrial tert-butyl hydroperoxide

    China Chemistry Industry - YD Standards
    HG/T 5791-2021 2-Methyltetrahydrofuran for industrial use

    China Chemistry Industry - YD Standards
    HG/T 5785-2021 4-Chlorophthalic anhydride for industrial use

    China Chemistry Industry - YD Standards
    HG/T 5784-2021 3-Chlorophthalic anhydride for industrial use

    China Chemistry Industry - YD Standards
    JB/T 5244-2021 Electromagnet for hydraulic valve

    China Machinery Industry - YD Standards
    YS/T 1415-2021 Determination of acidity in hydrometallurgical zinc leachate - complexation masking - neutralization titration method

    China Non-ferrous Metal Industry - YD Standards
    JC/T 2608-2021 Concrete Hydration Temperature Rise Inhibitor{Òë}

    China Building Material Industry - YD Standards
    YD/T 5254-2021 Mobile Internet of Things (NB-IoT) Engineering Specifications

    China Telecommunication Industry - YD Standards
    YD/T 5250-2021 Specification for construction supervision of mobile communication repeater project

    China Telecommunication Industry - YD Standards
    YD/T 5248-2021 Engineering technical specification for multifunctional steel towers for micro communication base stations

    China Telecommunication Industry - YD Standards
    YD/T 5247-2021 Specification for Construction Supervision of Broadband IP Metropolitan Area Network Engineering

    China Telecommunication Industry - YD Standards
    YD/T 5246-2021 Design specification for broadband trunking communication based on LTE technology

    China Telecommunication Industry - YD Standards
    YD/T 5196.1-2021 Seismic Performance Testing Specification for Server and Gateway Equipment Part 1: Server Equipment

    China Telecommunication Industry - YD Standards
    YD/T 5185-2021 IP Multimedia Subsystem (IMS) Engineering Design Specification

    China Telecommunication Industry - YD Standards
    YD/T 5181-2021 Broadband IP Metropolitan Area Network Engineering Acceptance Specification

    China Telecommunication Industry - YD Standards
    YD/T 5163-2021 Engineering technical specification for telecom operation customer service call center

    China Telecommunication Industry - YD Standards
    YD/T 5159-2021 Specification for acceptance of mobile multimedia message center project

    China Telecommunication Industry - YD Standards
    YD/T 5142-2021 Technical Specification for Intelligent Network Engineering

    China Telecommunication Industry - YD Standards
    YD/T 5132-2021 Code for acceptance of mobile communication steel tower mast structure engineering

    China Telecommunication Industry - YD Standards
    YD/T 5123-2021 Specification for construction supervision of communication line engineering

    China Telecommunication Industry - YD Standards

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