The H-II is a type of rocket developed by Mitsubishi Heavy Industries in Japan. It is designed to launch payloads into space, primarily for missions involving satellites and scientific research. The H-II rocket family includes several versions, with the first launch occurring in 1994. This rocket is notable for its use of liquid fuel and advanced technology, which allows for efficient and reliable launches. The H-II has been instrumental in supporting Japan's space exploration efforts, including missions to the International Space Station and various satellite deployments.