China Acoustics―Acoustic i GB Standards Search Result |
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2. Other English version GB Standards are not ready translated, only after get your order, then we translate them, time usually need 3-5 days . |
GB/T 31013-2014 Acoustics―Acoustic insulation for pipes,valves and flanges 声学 管道、阀门和法兰的隔声 - 中英文版 |
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