Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
Terpene resin, also named polyterpene resin or pinene resin. It is a series of liquid & solid linear polymer which primarily consist of α pinene or β pinene of turpentine that are catalyzed by Falk's catalytic, and polymerized by positive ion.
