GENEVA, Feb. 2 -- HEILONGJIANG HUIDA TECHNOLOGY CO., LTD. (Building 1, Science and Technology Innovation Headquarters, Shenzhen (Harbin) Industrial Park, No. 288 Zhigu Street, Songbei DistrictHarbin, Heilongjiang 150000), 黑龙江惠达科技股份有限公司 (中国黑龙江省哈尔滨市松北区智谷大街288号深圳（哈尔滨）产业园区科创总部1号楼) filed a patent application (PCT/CN2024/075173) for "SYSTEM AND METHOD FOR MEASURING LIQUID PESTICIDE MASS OF PLANT PROTECTION UNMANNED A...