GENEVA, June 29 -- ZHEJIANG TOPSUN MECHANICAL AND ELECTRICAL GROUP CO., LTD. (Municipal Electrical and Mechanical Industrial Zone, Sha AoCheng Zhong Village, Yucheng Street, Yuhuan CityTaizhou, Zhejiang 317600), 浙江双友机电集团股份有限公司 (中国浙江省台州市玉环市玉城街道城中村沙岙（市机电工业园区）) filed a patent application (PCT/CN2024/072201) for "MATERIAL RETURN MECHANISM FOR CULTIVATION EQUIPMENT" on Jan 13, 2024. With publication no. WO/2025/129776, the details related to the pate...