... time, improve labour condition. JCG Double-layered CauldronUsage:Stainless steel double-layered cauldron is also called double-layered steam cauldron, which is applied ... time of boiling, temperature being controlled easily. Inner layer pan body is made up of acid-resistant and thermal-proof, austenitic ... figure, easy installation, simple operation, on the safe side. JCG Double-layered jacket tank