Portable maintenance tool pickup device von HE LEI, ZHANG PENGYUAN, LIU HUAN, TIAN YE, WANG QIANG, HAO YULEI, XU XIAORUI, JIANG YICHAO, MA CHANG-YEOB, LI YARU, ZHANG RUIQIONG, BAI XUELONG, ZHANG ZILIANG

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Power grid line sundry cleaning device von HE LEI, WANG SHUAI, ZHANG PENGYUAN, JU YONGQIANG, WANG QIANG, HAO YULEI, YANG YU, LI ZHUO, JIANG YICHAO, XU XIAORUI, MA CHANG-YEOB, LI YARU, BAI XUELONG, ZHANG ZILIANG, GUO RUI, YANG HAOYUAN

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