GENEVA, Nov. 2 -- NINGBO DERUNTANG INTELLIGENT TECHNOLOGY CO., LTD (No. 049, Floor 14, Building 006 (14-1), Hefeng Creative Plaza, No. 375Jiangdong North Road, Minglou Street, Yinzhou DistrictNingbo, Zhejiang 315040), 宁波德润堂智能科技有限公司 (中国浙江省宁波市鄞州区明楼街道江东北路375号006幢（14-1）和丰创意广场丰庭楼14楼049号工位) filed a patent application (PCT/CN2024/143800) for "FLAT MOP SQUEEZING DEVICE AND HAND-WASH-FREE FLAT MOP" on Dec 30, 202...