IRPC’s refinery has a total capacity of 215,000 barrels per day (bpd), the 3rd largest refinery in Thailand in terms of production capacity. IRPC manufactures a range of petroleum products, namely liquefied petroleum gas (LPG), naphtha, gasoline, diesel, and fuel oil. Additionally, IRPC’s Lube Base Oil Group I plant has a total capacity of 320 kilotons per annum (KTA), and the associated asphalt plant has a total capacity of 600 KTA, which are the highest domestic capacities. It is Thailand’s first asphalt plant to sell TIS-certified 40/50 asphalt in the domestic market. IRPC is also a producer of the Terramaxx-branded rubber process oil,whose quality has attained international recognition.