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.
1 4 B utanediol(b do) is an important organic chemical and fine chemical raw material, and it is the basic raw material for the production of polybutylene terephthalate (PBT) engineering plastics and PBT fibers; PBT plastics are the five most promising ones. One of engineering plastics.
1 4-b utanediol(b do) is the main raw material for the production
1 4 B utanediol(b do) is used in automobile cleaning, cosmetics, medicine and other industries
