Indorama Ventures was established in 2537 in the petrochemical business on the production of polyester, polypropylene beauty lean times Rev Jonathan Letterman (PETA), the pure acid (PTA) and fleece. Indorama Ventures. Is one of the largest vertically integrated polyester chain in the world and the world's leading manufacturer of wool yarns. Indorama Ventures to the Stock Exchange of Thailand in 2548.