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GB/T 34877.4-2024 Chinese PDF (GB/T34877.4-2024) GB/T 14598.1871-2024 5-2024_Chinese: Semiconductor devices - Part

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5-2024_Chinese: Semiconductor devices - Part 5-5: Optoelectronic devices - Photocouplers (Chinese: 半导体器件 第5-5部分：光电子器件 光电耦合器)

1-2024_Chinese: Lifting appliances - Intelligent systems - Part 1: Vocabulary and classification (Chinese: 起重机械 智能化系统 第1部分：术语和分级)

English versions: GB/T 45191-2025

GB/T 43982

English versions: GB/T 2910

GB/T 34877.4-2024 Chinese PDF (GB/T34877.4-2024) GB/T 14598.1871-2024 5-2024_Chinese: Semiconductor devices - PartGB T 34877. 4 2024_Chinese: Industrial fans Determination of fan sound power levels under standardized laboratory conditions Part 4: Sound intensity method (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 34877. 4 2024

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