GS Caltex has cruide oil refining facilities and provides cutting-edge technology to cutting-edge products. GS Caltex is the fourth largest single-site oil refinery in the world. GS Caltex supplies high-quality gasoline and other innovative products by continuously improving technology and investing in strategic R&D initiatives and projects. GS Caltex also produces 100% sulfur-free, environment-friendly fuel for our customers. Our products reach customers in Korea and all over the world. In addition to our diverse line of products, we have develop a high-quality fuel that guarantees better performance and cleaner-burning engines.