PCS is the upstream company of the Singapore Petrochemical Complex on Jurong Island, which is the premier hub of Singapore's petroleum and petrochemical industries. With capacities of over 1 million tonnes per year of ethylene and 600,000 tonnes per year of propylene, PCS is recognized for its production of ethylene and propylene, along with other by-products such as acetylene, butadiene, 1-butene, MTBE, benzene, toluene, and xylene.