Compra y venta de chatarra no ferrosa y ferrosa. TST has evolved into a vertically integrated producer, buyer, trader and processor of aluminum ingot, sow, billet, scrap and dross. Today, TST is one of the major American producers of secondary aluminum ingot and billet. TST is also a major distributor of primary aluminum foundry ingot, grain refiners and hardeners. Other services include worldwide trading of nonferrous scrap and other aluminum commodities. Aluminio, cobre, bronce, acero inox, radiadores, hms, etc

En estas categorias vas a poder encontrar cosas como Industria. Pero tambien podes encontrar Metalurgia y minería