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    GB/T 14290-2021 Round baler

    China National - GB Standards
    GB/T 14230-2021 Test method of tooth bending strength for gear load capacity

    China National - GB Standards
    GB/T 14229-2021 Test method of surface contact strength for gear load capacity

    China National - GB Standards
    GB/T 14146-2021 Test method for carrier concentration of silicon epitaxial layers - Capacitance-voltage method

    China National - GB Standards
    GB/T 13469-2021 Economical operation for centrifugal，mixed flow and axial flow pump systems

    China National - GB Standards
    GB/T 13345-2021 Oil film bearing for flat rolling mill

    China National - GB Standards
    GB/T 13173-2021 Surface active agents - Test methods for detergents

    China National - GB Standards
    GB/T 13163.2-2021 Radiation protection instrumentation—Radon and radon decay product measuring instruments—Part 2:Specific requirements for 222Rn and 220Rn measuring instruments

    China National - GB Standards
    GB/T 12807-2021 Laboratory glassware-Graduated pipettes

    China National - GB Standards
    GB/T 12773-2021 Valve steel and superalloy bars for internal combustion engines

    China National - GB Standards
    GB/T 12719-2021 Exploration specification of hydrogeology and engineering geology in mining areas

    China National - GB Standards
    GB/T 12703.2-2021 Textiles - Test methods for electrostatic propensity - Part 2: Test method using manual friction

    China National - GB Standards
    GB/T 12703.1-2021 Textiles - Test methods for electrostatic propensity - Part 1: Test method using corona charging

    China National - GB Standards
    GB/T 12604.7-2021 Non-destructive testing - Terminology - Leak testing

    China National - GB Standards
    GB/T 12604.6-2021 Non-destructive testing—Terminology—Eddy current testing

    China National - GB Standards
    GB/T 12363-2021 Classification of forging functions

    China National - GB Standards
    GB/T 12265-2021 Safety of machinery—Minimum gaps to avoid crushing of parts of the human body

    China National - GB Standards
    GB/T 12190-2021 Method for measuring the shielding effectiveness of electromagnetic shielding enclosures

    China National - GB Standards
    GB/T 11362-2021 Synchronous belt drives—Calculation of power rating and drive center distance with belts pitch codes MXL,XXL,XL,L,H,XH and XXH

    China National - GB Standards
    GB/T 11344-2021 Non-destructive testing—Ultrasonic thickness measurement

    China National - GB Standards
    GB/T 11270.2-2021 Superabrasive products—Diamond circular saw blade—Part 2:Sintered saw blades

    China National - GB Standards
    GB/T 11270.1-2021 Superabrasive products-Diamond circular saw blade-Part 1:Welded saw blades

    China National - GB Standards
    GB/T 10067.36-2021 Basic specification for electroheating and electromagnetic processing installations—Part 36:Induction through-heating installations

    China National - GB Standards
    GB/T 10066.32-2021 Test methods for electroheating and electromagnetic processing installations-Part 32:Induction through-heating installations

    China National - GB Standards
    GB/T 9966.9-2021 Test methods for natural stone—Part 9: Determination of the dynamic modulus of elasticity by measuring the fundamental resonance frequency

    China National - GB Standards
    GB/T 9966.13-2021 Test methods for natural stone—Part 13:Determination of water absorption coefficient by capillarity

    China National - GB Standards
    GB/T 9966.11-2021 Test methods for natural stone—Part 11: Determination of resistance to ageing by cold and thermal shock

    China National - GB Standards
    GB/T 9481-2021 Axial-flow pump of medium-small size

    China National - GB Standards
    GB/T 8366-2021 Resistance welding—Resistance welding equipment—Mechanical and electrical requirements

    China National - GB Standards
    GB/T 8243.12-2021 Methods of test for full-flow lubricating oil filters for internal combustion engines—Part 12: Filtration efficiency using particle counting and contaminant retention capacity

    China National - GB Standards

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