Rosin, Tar Rosin, Raw Rosin

.t_松脂Distillationthe subsequent substance. Solid, transparent, insoluble in water, soluble in alcohol, hard and brittle, pale yellow or brown in color. It is an industrial raw material used in the production of paints, soap, paper, matches, etc.

Resin is oil that flows from within the trunk of pine trees, melts into a watery state at high temperatures, and turns into a blocky solid after drying (with no fixed melting point). It has a burnt yellow or deep red color. It is an important chemical raw material. In daily life, it is primarily used as a flux during circuit board soldering. In musical instruments, resin is appliedErhu,violin,MaotouqinIt is used to increase the friction between the bow hairs and the strings during the string music phase.