China Acoustics--Audible e GB Standards Search Result |
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1. Ready translated GB standards  and Chinese version GB Standards, you can purchase directly in the web page; After receive your payment, we will send the GB Standards PDF file to your Email within
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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 . |
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GB/T 19888.1-2005 Acoustics-Stationary audible warning devices used outdoors-Part 1:Field measurements for determination of sound emission quantities 声学 户外用固定式听觉报警器 第1部分：声发射量的现场测定 - 英文版 |
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GB/T 12800-1991 Acoustics--Audible emergency evacuation signal 声学 紧急撤离听觉信号 - 英文版 |
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