It is widely used in the food processing of the candy,pharmacy,daily food,wine,cake,candied fruit,drink,can,sauce and meat etc. IntroductionAnother name of the stainless steel Double-layered cauldron is sandwich steam boiler. It is widely used in the food processing of the candy,pharmacy,daily food,wine,cake,candied fruit,drink,can,sauce and meat and so on. Also used in the making soup, cooking ...