The external coil reactor has the characteristics of rapid heating, high temperature resistance, corrosion resistance, sanitation, no environmental pollution, no need for boiler automatic heating, and easy to use. It is widely used in petroleum, chemical industry, rubber, pesticide, dye, medicine, food, vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and other processes, and is based on the full mixing of reactants, For the heating, cooling, liquid extraction and gas absorption and other physical change process, we need to use stirring device to get good results, and can design and process external coil reactor for customers.