GB - Chinese national standards

Internal combustion engines—Piston rings—Part 8: Rectangular rings made of steel

Available languages: English, Chinese

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Internal combustion engines - Piston rings - Part 9: Keystone rings made of cast iron

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Dimensions of base for color picture tubes

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Semiconductor devices—Integrated circuits—Part 21Sectional specification for film integrated circuits and hybrid film integrated circuits on the basis of the qualification approval procedures

Available languages: English, Chinese

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Letter symbols for discrete semiconductor devices

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Available design: electronic design (pdf), Print design

Letter symbols for discrete semiconductor devices

Available languages: English, Chinese

Available design: electronic design (pdf), Print design

Gears—Calculation of load capacity of worm gears

Available languages: English, Chinese

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Internal combustion engines - Cast iron wet cylinder liners - Specifications

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Photography - Density Measurement - Part 2Geometric conditions for transmission density

Available languages: English, Chinese

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Internal combustion engines—Main and connecting rod bearings—Specifications

Available languages: English, Chinese

Available design: electronic design (pdf), Print design