Tree resin is a natural substance that is produced by trees and other plants. It is a viscous liquid that is used for a variety of purposes, including as a sealant, adhesive, and varnish. The three most common types of tree resin are ELEMI, COPAL, and LAC. ELEMI is a pale yellow resin that is derived from the Canarium luzonicum tree, which is native to the Philippines. COPAL is a hard, brittle resin that is derived from the Protium COPAL tree, which is native to Central and South America. LAC is a red-brown resin that is derived from the Laccifer lacca insect, which is native to India and Thailand. All three of these tree resins have been used for centuries in various applications.