GENEVA, April 27 -- SHENZHEN KENQING TECHNOLOGY CO., LTD. (A1 1F, Shanshui Building A, Nanshanyungu Innovation Industrial Park, Liuxian Ave. Taoyuan Street, Nanshan DistrictShenzhen, Guangdong 518000), 深圳市肯綮科技有限公司 (中国广东省深圳市南山区桃源街道留仙大道南山云谷创新产业园山水楼A座1楼A1) filed a patent application (PCT/CN2023/128451) for "WAIST SUPPORT DEVICE HAVING CYLINDRICAL DIFFERENTIAL MECHANISM" on Oct 31, 2023. With publication no. WO/2025/081536, the details relate...