On 5 December 2019. The "Ecological Drying resources and Dust filtering System" technical exchange conference co-sponsored by Wuxi COFCO Engineering & Technology Co., Ltd. and Suzhou Wujiang Grain Purchase and Sales Co., Ltd. was held in Wujiang District, Suzhou City. More than a hundred representatives from grain bureaus and grain purchase and sales units in major cities, counties and districts in Jiangsu Province attended the meeting and inspected the application demonstration line on the spot. The Ecological drying resources and dust filtering system uses the circulating heat pump technology and pulse dust filtering technology to achieve the heat pump heating efficiency COP≈6 and the grain drying unit time precipitation rate ≥0.5%. It satisfies the requirements of using heat pump units in cold environments, and realizes no-dust exhaust emissions from grain drying.As a new and efficient, green grain drying technology, the system will effectively promote the sustainable development of the ecological environment in the Yangtze River Delta region in the field of grain collection, storage and transportation.