Zhengzhou Dongding Machinery Co., Ltd. is a high-tech enterprise integrating R&D design, production installation, production management, sales, after-sales service and technical consultation. The company has core technology system, which integrates the thermal combustion, dehydration, drying, molding, separation and dust removal. According to different materials characteristics, scientific equipment selection and process optimization are adopted. At present, our rotary dryer has been successfully applied in the coal, feed, biomass fuel, organic fertilizer processing and other industries. Especially the coal dryers like lignite dryer, fly ash dryer, coal slime dryer, etc. are well received by the customers at home and abroad.