Cost control is the key to the sustainable development of enterprises. Defoamers can effectively help enterprises reduce costs by reducing the waste of raw materials, equipment consumption and energy consumption caused by foam. First of all, foam will carry a lot of raw materials, leading to direct waste of raw materials. After using defoamers, these raw materials can be retained, improving the utilization rate of raw materials. Secondly, foam may lead to equipment blockage and wear, increasing the cost of equipment maintenance and replacement. The application of defoamers reduces these costs and extends the service life of equipment. Finally, foam will also affect heat transfer efficiency and increase energy consumption. Defoamer improves heat transfer efficiency and reduces energy consumption cost by eliminating foam.