The theoretical achievement "Analysis Method of Deep Drying of Granular Agricultural Products" won the third prize of Guangdong Natural Science (Mathematics) Achievement in 2000; The developed "grain moisture online detection device" and "litchi peeling and hulling machine" have obtained national patent products; The technical achievement "TM-I Grain Moisture Tester" passed the quality inspection and appraisal of "Quality Inspection and Testing Center of Agricultural Products Processing Machinery and Equipment of Ministry of Agriculture", and passed the achievement appraisal of Provincial Science and Technology Department from June 5 to February 2005. Appraisal conclusion: the overall technical level has reached the international advanced level; "Intelligent Dryer Controller (5HSH-I)" passed the quality inspection and scientific appraisal of "Drying Machinery and Equipment Quality Inspection and Testing Center of the Ministry of Agriculture" in March 2004. "Complete set of technology and equipment for centralized grain drying" has been put into industrial operation.