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2022-11-16Various police equipment provides self-protection for police officers...
2022-11-16A view of the machinery from the new telescopic baton...
2022-11-16High-tech police equipment must not be used as decoration...
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2019-08-14Smart City Drive Smart Traffic overall solution is perfect...
2019-08-14New energy vehicles permanent magnet material cooperation mechanism was set up in Beijing...
2019-08-14Tuner on the smart robot, imitation cut under the road...
2019-08-14For the first time in history, Chinese scientists successfully achieved counterfactual quantum com...
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