• GB/T 4214.21-2025 Page 1
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GB/T 4214.21-2025 Chinese PDF (GB /T4214.21-2025)

GB/T 4214.21-2025 Chinese PDF (GB /T4214.21-2025)

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GB/T 4214.21-2025_Chinese: Test method for noise of household and similar electrical appliances - Part 21: Particular requirements for oral hygiene appliances (Chinese: 家用和类似用途电器噪声测试方法 第21部分：口腔卫生器具的特殊要求)
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English versions: GB/T 4214.21-2025
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