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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 35070.4-2018 |
Parking electronic toll collection—Part 4：Technical specification for key equipment testing 停车场电子收费 第4部分：关键设备检测技术要求 |
China National Standards 4：Technical |
 English PDF |
| GB/T 34560.4-2017 |
Structural steels—Part 4：Technical delivery conditions for high yield strength quenched and tempered structural steel plates 结构钢 第4部分：淬火加回火高屈服强度结构钢板交货技术条件 |
China National Standards 4：Technical |
English PDF |
| GB/T 21645.4-2010 |
Technical requirements for automatically switched optical network - Part 4：Technical specification of signalling 自动交换光网络(ASON）技术要求 第4部分：信令技术 |
China National Standards 4：Technical |
English PDF |
| GB/T 16456.4-2008 |
End mills with brazed helical hardmetal tips - Part 4：Technical specifications 硬质合金螺旋齿立铣刀 第4部分：技术条件 |
China National Standards 4：Technical |
English PDF |
| GB/T 21062.4-2007 |
Government information resource interchange system - Part 4：Technical management requirements 政务信息资源交换体系 第4部分：技术管理要求 |
China National Standards 4：Technical |
English PDF |
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