After more than 20 years' efforts and innovation, Wantong has become a large-scale and high-tech production system design and equipment manufacturing base of sulfuric acid titanium dioxide and chlorination titanium dioxide in China, and obtained 168 patents such as titanium dioxide calcination waste heat recovery device, continuous gravity sulfuric acid production acid hydrolysis device, horizontal mixer, horizontal double-shaft stirring reactor, titanium dioxide rotary kiln feeding screw machine, etc. Titanium dioxide production equipment, flash dryer, disc filter, high-speed dispersion mill, disc, horizontal mixer, horizontal double-shaft stirring reactor, titanium dioxide rotary kiln feeding screw machine, air-cooled cooler, roller mill and its energy-saving and environmental protection equipment are selected by domestic customers, especially titanium dioxide enterprises in China, and exported to South Africa, Russia, Argentina, Brazil, South Korea and other countries.