Hyundai Oilbank, a Korean refiner affiliated with Hyundai Heavy Industries, has made strides in sustainable biofuel production at its Seosan plant in South Chungcheong Province. The company recently announced that its biofuel production technology received accreditation from the International Sustainability & Carbon Certifications (ISCC), highlighting its commitment to eco-friendly practices. By utilizing a co-processing method that combines petroleum-based feedstocks and bio-based materials like used cooking oil and refined soybean oil, Hyundai Oilbank has been able to produce eco-friendly materials, including sustainable aviation fuel (SAF) and bio naphtha. The company's refinery facilities specialize in breaking down heavy oils, such as bunker fuel, into lighter oils like gasoline, kerosene, and diesel. Moreover, by incorporating hydrogen, Hyundai Oilbank is able to generate SAF, further contributing to its sustainable fuel portfolio. The biofuels produced through these processes have been recognized with three types of ISCC certification -- EU, CORSIA, and PLUS, underscoring their compliance with global standards. Jeong Im-joo, the head of Hyundai Oilbank's safety production division, emphasized that the company's co-processing method integrates advanced refining technology, paving the way for the production of various eco-friendly products. In the context of the global aviation industry, where there is a growing focus on biofuels, Hyundai Oilbank's innovative approach positions it well for the future. Notably, the European Union has proposed regulations mandating airlines to blend a minimum of two percent SAF with traditional jet fuel by 2025, while France has already implemented a one percent SAF requirement since 2021. Hyundai Oilbank's efforts align with these trends, showcasing its readiness to contribute to the push for sustainable aviation fuels.