The main raw materials procured by OPTC are PX and AA. The risks involving the transport of petrochemical materials include traffic accidents and chemical leakage. Another safety concern is driver’s use of telecommunication devices while operating the vehicle. OPTC holds quarterly supplier meetings to review the transport operation and conduct audit to ensure safety. In 2020, 54 participants from transport carriers attended the 4 supplier meetings. Aside from reviewing safety improvement, a PX spill drill was conducted to help the suppliers react swiftly during actual incidents to minimize damage. In 2020, all transport suppliers received the rating of A from the audit, an indication that the suppliers have greatly improved transport quality.