With the rapid development of the construction industry, large bridges and highways and other infrastructure, concrete has shown explosive growth. The hydration heat of concrete needs to be reduced during the molding process. Too high a temperature will cause water to evaporate too quickly, accelerate the hydration reaction, condense quickly, and easily cause cold seams. Traditional cooling methods mainly use ice machines to cool down with ice cubes. Screw chillers are simple to install, have sufficient cooling capacity, shorten the cooling time, and the refrigeration unit can provide a constant and stable temperature. The chiller adjustment range is normal temperature (5℃-30℃) to ensure the stability of water delivery. At present, China Railway Fourth Bureau and its member units and other engineering companies are using our products.