With the continuous use and promotion of potassium formate products in high-end areas such as high-speed bridges and airport runways for deicing and snow melting, in order to reduce the corrosion of chlorine on pavement concrete. At the request of foreign customers, our company has upgraded the potassium formate products. The content of chloride ions in the transformed potassium formate product is reduced to below 50 ppm. This solves the problems that have plagued the industry for many years, such as the corrosion of sodium chloride, magnesium chloride and other snow melting salts on concrete, and the problem of too strong acetic acid smell after snow melting such as acetate.