Generally speaking, resin in industry and scientific research refers to polymer compounds, which are resin products obtained by simple organic chemical synthesis or chemical reaction of some natural products.
The resin mentioned in daily life generally refers to natural resin, which is an amorphous organic substance obtained from the secretions of natural animals and plants, such as rosin, amber, shellac and so on.
The above answer is incomplete. Rosin can also be synthesized, so it can be produced in chemical plants.
Natural rosin belongs to agricultural products.
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