HNO International, Inc. focuses on systems engineering design, integration, and product development to generate green hydrogen-based clean energy solutions to businesses and communities decarbonize in the United States. The company offers hydrogen refueling and generation systems for fuel cell electric vehicles, such as forklifts, drones, cars, and trucks, as well as for zero-emission heating and cooking applications; green hydrogen systems engineering design, integration, and products to the zero-emission vehicle and mobile equipment market consisting of hydrogen fuel cell electric passenger vehicles, material handling equipment, and forklifts and airport ground support equipment, as well as the medium and heavy-duty truck market; ammonia, fertilizer, steel, mining, electronics, semiconductors, and fuel cell electric vehicles; and the gasoline and diesel engine emissions and maintenance reduction product and services market. It also provides custom hydrogen carbon cleaning equipment for engine service providers; hydrogen for internal combustion engines; HyGrid system, solar and hydrogen powered micro-power grid designed to provide power to a specific industrial development and residential communities; compact hydrogen refueling station, a dispensing system of hydrogen for vehicles; scalable hydrogen energy platform, a fully containerized hydrogen production process which produces, stores, and dispenses green hydrogen made from water; and hydrogen carbon cleaner, a device used to clean carbon deposits from internal combustion engines. In addition, the company engages in converting wasted energy from natural gas flaring into power source for hydrogen production, AI computing, and bitcoin mining. The company was formerly known as Excoin Ltd and changed its name to HNO International, Inc. in September 2021. HNO International, Inc. is based in Murrieta, California.