Hunan Nanofilm New Material Technology Co., Ltd., a subsidiary controlled by Jianhongda, leverages the research capabilities of Central South University and Hunan University to develop environmentally friendly amorphous tungsten alloy surface treatment technology. This technology excels in corrosion resistance, wear resistance, and high-temperature tolerance, leading the nation and rivaling the best globally. It is extensively applicable in fields such as marine engineering, defense, and oil exploration. This technology has been awarded the Second Prize of State Technological Invention Award, the First Prize of China Machinery Industry Science and Technology Award, as well as the "National Key Environmental Protection Project Category A" by the State Environmental Protection Administration. Moreover, it has been awarded the "Clean Production Technology" for national promotion by the Ministry of Industry and Information Technology.

Official website of Hunan Nanofilm New Material Technology Co., Ltd. ： http://www.hnnfe.com