Shanghai double-layer stainless steel high-pressure reaction kettle price and usage characteristics: The inner container of the double-layer glass reaction kettle is used to store the reaction materials, and can be evacuated and stirred at a variable speed. The interlayer can introduce freezing liquid, water, and high-temperature liquid to heat and cool the materials. Used for experiments, pilot testing, and production of new materials in chemistry, fine chemicals, and biopharmaceuticals. The product can be combined with circulating water multi-purpose vacuum pumps, diaphragm vacuum pumps, low-temperature circulation (vacuum) pumps, circulation coolers, low-temperature coolant circulation pumps, closed refrigeration and heating circulation devices (also known as high and low temperature circulation devices) to form system devices