What's the difference between cold dishes and hot plates?

As far as I know, the main difference between cold plate and hot plate lies in temperature, material, use and production technology. Cold plate is usually used to manufacture cold storage equipment and cold storage, which requires good heat insulation and corrosion resistance, and is usually made of steel plate, stainless steel plate and other materials. Hot plates are used for heating equipment and water heaters. This requires high thermal conductivity and pressure resistance. Cast iron plates, steel plates and other materials are usually used. In the production process, the cold plate adopts surface treatment technologies such as zinc plating and spraying, and the hot plate adopts casting and welding.