The winter cold protection facilities in northern China broadly refer to the products and methods that let people get the heating demand. It is a product that increases the ambient temperature after heat exchange is formed by heating the air with heat source and medium. The special steel for heating is specially designed for heating system, with excellent corrosion resistance. Unlike most domestic steel products, imported steel products have undergone very strict gamma-ray flaw detection to ensure that there is no sand hole (sand hole is the super hand of new radiator quality). Gold flagship steel radiator adopts imported cold-rolled low carbon steel for HVAC.