This equipment adopts the core technology of precision manufacturing of Huasheng Company, equipped with an internal multi-point temperature control device, and the parts are precisely assembled low-temperature liquid ammonia. It adopts a triple sealing structure, which solves the problem of drug contamination. The bottom of the tank is a smooth round bottom with a dualstructure, which realizes 360° thorough stirring without dead corners, ensuring that the drug is evenly dispersed, and the stirring does not swell the material: maximum 20L, minimum 40L; swellable material: maximum 80L, minimum 40L.