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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 31022-2014 |
General technique specification for two-dimensional barcode business card 名片二维码通用技术规范 |
China National Standards General technique specification |
 English PDF |
| GB/T 15939-1995 |
General specification for land mobile communication system equipment using multi-channel access techniques without a central controller 无中心多信道选址移动通信系统设备通用规范 |
China National Standards General technique specification |
English PDF |
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