Nanjing Well Pharmaceutical Co., Ltd. engages in the development, production, and sale of pharmaceutical excipients and synthetic lubricating base oils. Its products include polysorbate, propylene glycol, oleic acid, egg yolk lecithin, and sodium oleate for injection; sorbitan oleate; polyoxyl stearate; and triethyl citrate. It also offers hydraulic fluid, metal quenching, base fluid and lubricity additives, synthetic base for compress lubricants, base oil of chain lubs and grease, and base stock of engine oil. The company was founded on February 18, 2000 and is headquartered in Nanjing, China.