Hyundai Rotem's hydrogen extractor assembly line in Uiwang City, Korea Hyundai Rotem Co., a South Korea’s railway system maker under Hyundai Motor Group, said on Friday that it has won the demonstration project of building one liquid hydrogen fueling station in Gangwon Technopark, an industrial tech complex in Gangwon Province of Korea. The firm is aiming to bolster its hydrogen business portfolio by preoccupying the early stage of the liquid hydrogen charging market.Liquid hydrogen is a liquid state of the element hydrogen at atmospheric pressure. The element hydrogen needs to be cooled to minus 253 degrees Celcius to be liquefied. It can shrink to 1/800 of its volume in a gaseous state, making storage and shipping easier. The key technology of the fueling station is to change the hydrogen’s state from liquid to gas safe. Hyundai Rotem will demonstrate its in-house layout of the equipment and operating system of the fueling station. This is the first time for a domestic firm’s technology to be applied to a liquid hydrogen fueling station, a Hyundai Rotem official said. The firm is growing hydrogen fueling infrastructure as its new business. On April 20, it signed an agreement with Korea Gas Technology Corp. to build a hydrogen production center in Wanju County of North Jeolla Province in Korea. It founded a factory in Uiwang City, Gyeonggi Province in 2020, and has produced five hydrogen extractors since then. In January of this year, Hyundai Rotem said the facilities are set to begin mass production in February with a production capacity of 20 hydrogen extractors. Each extractor produces 640 kilograms of hydrogen a day, enough to fully charge 129 units of Nexo, Hyundai's hydrogen-powered sport utility vehicle. Hyundai Rotem's move is in line with the Korean government's policy to prioritize building up the hydrogen distribution infrastructure. The country is aiming to increase the number of hydrogen charging stations to 660 and then over 2,000 by 2050, from the current 100. By Hyung-Kyu Kimkhk@hankyung.comJihyun Kim edited this article.