GENEVA, May 3 -- SHENZHEN TUOZHU TECHNOLOGY CO., LTD. (Room 201, Building A, No. 1 First Qianwan RoadQianhai Shengang Cooperation ZoneShenzhen, Guangdong 518000), 深圳拓竹科技有限公司 (中国广东省深圳市前海深港合作区前湾一路1号A栋201室(入驻深圳市前海商务秘书有限公司)) filed a patent application (PCT/CN2024/126126) for "3D PRINTING FILAMENT SYNTHESIS DEVICE, 3D PRINTING FILAMENT COLORING DEVICE, 3D PRINTING TOOL HEAD AND 3D PRINTING APPARATUS" on Oct 2...