GENEVA, May 10 -- SHENZHEN YUXIANCHENG CO., LTD. (B1503-1, Building 1, Tian'An Digital Innovation Park, No.524 Qinglin Road Huanggekeng Community, Longcheng Street, Longgang DistrictShenzhen, Guangdong 518100), 深圳市玉先成实业有限公司 (中国广东省深圳市龙岗区龙城街道黄阁坑社区清林路524号天安数码创新园1号厂房B1503-1) filed a patent application (PCT/CN2023/133199) for "APPARATUS CAPABLE OF ADJUSTING TENSIONING STRENGTH FOR USE IN CURTAIN DRIVER" on Nov 22, 2023. With publ...