Colophonium, a pine resin which is the oil resin flowing out after cutting the pine tree, and is the product of tree physiological activities. Its main components are monoterpene, sesquiterpene, resin acid and other diterpenoid compounds.

Pine resin is a resource product from natural plants such as Pinus massoniana, Pinus elliottii, Pinus simao/Pinus yunnanensis, Pinus armeniaca and Pinus caribbeans. So the classification of pine resin is mainly based on the types of pine trees.

The quality evaluation method of Colophonium: appearance, oil content, impurities and moisture. The lighter the color, the higher the oil content, the less the water and impurities, and the better the quality of Colophonium.

Colophonium is the direct raw material for processing colophony, rosin, mainly used for processing rosin products. The non-volatile natural resin obtained by high temperature distillation is called rosin. Rosin is a light yellow to reddish brown, transparent, thermoplastic vitreous substance.

China is the world’s largest rosin producer, with an annual output of more than 1.2 million tons of rosin, accounting for 70% of the international rosin market.

Rosin is mainly concentrated in the following countries: China, the United States, India, Vietnam, Indonesia, Brazil, Portugal, Mexico, Russia, etc.

Rosin is a very characteristic forest product in China’s forest industry. Rosin is mainly used in coating, ink, paint, adhesive, road asphalt, synthetic rubber, paper and other industries through rosin and rosin deep processing products.