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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 3556-1983 |
Standard gray and color test chart for pHotography--Specifications 摄影用标准灰板、色板的技术规范 |
China National Standards pH |
 English PDF |
| GB/T 3489-1983 |
Hardmetals--MetallograpHic determination of porosity and uncombined carbon 硬质合金 孔隙度和非化合碳的金相测定 |
China National Standards pH |
English PDF |
| GB 3380-1982 |
Ringing and tone for telepHone automatic switching network 电话自动交换网铃流和信号音 |
China National Standards pH |
English PDF |
| GB 3378-1982 |
Subscriber line signalling system for telepHone automatic switching network 电话自动交换网用户信号方式 |
China National Standards pH |
English PDF |
| GB 3377-1982 |
Multifrequency register signalling system for telepHone automatic switching network 电话自动交换网多频记发器信号方式 |
China National Standards pH |
English PDF |
| GB 3376-1982 |
Inband pulsing single frequencyline signalling system for telepHone automatic switching network 电话自动交换网带内单频脉冲线路信号方式 |
China National Standards pH |
English PDF |
| GB/T 3144-1982 |
Toluene--Determination of hydrocarbon impurities--Gas chromatograpHic method 甲苯中烃类杂质的气相色谱测定法 |
China National Standards pH |
English PDF |
| GB/T 3239-1982 |
Expression of pHysical and subjective magnitudes of sound and noise in air 空气中声和噪声强弱的主观和客观表示法 |
China National Standards pH |
English PDF |
| GB/T 2787-1981 |
Keyboard for international information processing interchange using the 7-bit coded character set--AlpHa-numeric area 信息处理交换用七位编码字符集键盘的字母数字区布局 |
China National Standards pH |
English PDF |
| GB 2312-1980 |
Code of Chinese grapHic character setfor information interchange--Primary set 信息交换用汉字编码字符集 基本集 |
China National Standards pH |
English PDF |
| GB/T 3323.2-2019 |
Non-destructive testing of welds—RadiograpHic testing—Part 2:X- and gamma-ray techniques with digital detectors 焊缝无损检测 射线检测 第2部分：使用数字化探测器的X和伽玛射线技术 |
China National Standards pH |
English PDF |
| GB/T 3323.1-2019 |
Non-destructive testing of welds—RadiograpHic testing—Part 1:X- and gamma-ray techniques with film
焊缝无损检测 射线检测 第1部分：X和伽玛射线的胶片技术 |
China National Standards pH |
English PDF |
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