... original Equipment2.Ternary compound cascade refrigeration3 .high and low pressure control4.The Refrigerant R50D , R13, R145.Self-develop ... the stainless steel tank more evenly , temperature control accuracy2.High and low pressure control3.Use the balance of heat to ... will customize Low -temperature Constant-temperature Stirring Reaction Bathin different models(5L,10L,20L,30L,40L,60L,80L,100L)! ...