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China’s patent application reaches new high in 2017 (2)

By Liu Lingling (People's Daily)    10:08, March 13, 2018

Hao Zhishan, head of police office at Xinxiang East railway station, installs an intrusion detection system, Feb. 3, 2018. The system, hailed as “electric mine”, has evolved into the third generation and won the national patent. (Photo from CFP)


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(Web editor: Wu Chengliang, Bianji)

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