Tong Ying Group is a China-based commodity trading company that acts as a middleman, buying bulk chemical and agricultural products from upstream suppliers and reselling them to downstream industrial customers in Mainland China. The company's core products are PTA (purified terephthalic acid, a petrochemical used in polyester and textiles), corn, and EVA (ethylene vinyl acetate, a thermoplastic polymer). Tong Ying has been actively shifting its product mix — scaling back low-margin ethylene glycol and exiting rebar entirely — in favor of PTA and corn. The company does not manufacture, warehouse, or transport any goods; it relies on third-party warehouses, and customers arrange their own pickup. Tong Ying earns a spread between supplier and customer prices, buying in bulk to access better pricing than customers could get directly from producers. Gross margins are extremely thin, so profitability depends on trading volume, pricing timing, and product mix management. The company has only 21 employees and minimal overhead. Tong Ying's longer-term ambition is to evolve beyond pure trading into a platform business: it plans to build an online chemical supply chain transaction platform (the CRMC Platform) that matches buyers and sellers, integrates trade finance, and coordinates warehousing, with a launch targeted by end-2025. It also plans to develop self-operated automated warehouses and a futures trading team. These initiatives remain in early planning stages.