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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 20441.2-2018 |
Electroacoustics—Measurement microphones—Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique 电声学 测量传声器 第2部分：采用互易技术对实验室标准传声器声压校准的原级方法 |
China National Standards Electroacoustics—Mea |
 English PDF |
| GB/T 20441.6-2017 |
Electroacoustics—Measurement microphones—Part 6: Electrostatic actuators for determination of frequency response 电声学 测量传声器 第6部分：用于测定频率响应的静电激励器 |
China National Standards Electroacoustics—Mea |
English PDF |
| GB/T 20441.5-2017 |
Electroacoustics—Measurement microphones—Part 5: Methods for pressure calibration of working standard microphones by comparison 电声学 测量传声器 第5部分：工作标准传声器声压校准的比较法 |
China National Standards Electroacoustics—Mea |
English PDF |
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