Thin film evaporator, also known as scraping film evaporator, is mainly different from molecular distillation in that it reduces the built-in condenser, so it does not belong to short-range distillation equipment. Compared to molecular distillation, thin film evaporators are suitable for concentrating, distilling, separating, dissolving, decarboxylating, and deodorizing some thermosensitive substances with relatively low boiling points. The difference between thin film evaporator and rotary evaporator is that the material stays on the heating surface for a short time, avoiding the disadvantages of repeated heating of the material by the rotary evaporator. It is very suitable for the concentration, distillation, separation, dissolution, decarboxylation, and deodorization of heat sensitive materials.