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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 22156-2008 |
Acoustics - Procedure for the comparison of noise-emission data for machinery and equipment 声学 机器与设备噪声发射数据的比较方法 |
China National Standards Acoustics - Procedur |
 English PDF |
| GB/T 20242-2006 |
Acoustics - Procedures for the measurement of real-ear acoustical characteristics of hearing aids 声学 助听器真耳声特性的测量方法 |
China National Standards Acoustics - Procedur |
English PDF |
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