 This facility was sited next to the Khewra salt range, Punjab, Pakistan in as rock salt and limestone; two key raw materials for manufacturing soda ash were available here in abundance.In 1995, ICI Pakistan Limited set up a USD 490 million PTA manufacturing facility at Port Qasim, near Karachi, which was commissioned in 1998.In 2001, the business was demerged or spun off to form Pakistan PTA Limited, a subsidiary of ICI Plc UK.