Multidirectional anchor rod tension meter von ZHANG SHIZHONG, HOU HONGSHAN, ZHANG YUQI, XIN WENGUO, LIU XUESONG, SUI YUEYI, LUAN RENLEI, DU DEJIANG, LIU XIANG, YANG WEIGANG, CHI ZHENGCHAO, LIU HOULIANG, ZHANG SHAOFEI, ZHANG DAWEI, SUN LIJUN

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Mortar consistency tester convenient to use von ZHANG SHIZHONG, HOU HONGSHAN, ZHANG YUQI, XIN WENGUO, LIU XUESONG, SUI YUEYI, LUAN RENLEI, DU DEJIANG, LIU XIANG, YANG WEIGANG, CHI ZHENGCHAO, LIU HOULIANG, ZHANG SHAOFEI, ZHANG DAWEI, SUN LIJUN

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Speed measuring device used for driving wheels of model car von LUAN DONGXIAO, CAO RENLEI, QIN XUXIN, YANG PANPAN, ZHAO XUAN, SHI JUN

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