GB - Chinese national standards

Non-destructive testing - Practice for ultrasonic testing of circumferential butt welds in steel pipes and tubes

Available languages: English, Chinese

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Steel tube scaffold coupler

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General requirement of forestry wheeled tractors and crawler tractors

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Test methods for forestry wheeled tractors and crawler tractors

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General rules for punctuation

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General rules for writing numerals in public texts

Available languages: English, Chinese

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Interface requirements for digital synchronization network

Available languages: English, Chinese

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Test methods for the performances of switching equipment clocks in digital network

Available languages: English, Chinese

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Networking specifications for641920 kbit/s video-conferencing systems

Available languages: English, Chinese

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Information technology—Security techniques—Entity authentication—Part 1: General

Available languages: English, Chinese

Available design: electronic design (pdf), Print design