Movable cleaning platform for drainage gutter von LI, ZONG-XIN, LI, RONG-KUN, LI, WEN-QUAN, ZHENG, GUO-XIONG, LIN, GUI-DONG, YE, WENUANG, LIN, YI-XIAN, WEN, FU-SONG, GUO, XINUAN, YOU, WENNG, ZHANG JIAN, JIN-XING, FANG, JUN-QIN, LIN, SAN-JI, LIN, QING-FA

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