Mitsubishi Heavy Industries, Ltd. (MHI) is working on the development of small satellites in addition to launch services and efforts related to space stations and international space exploration, which make up our main business. We have recently received an order from the Japan Aerospace Exploration Agency (JAXA) for development and operation of the RAPid Innovative Payload Demonstration Satellite 3 and are proceeding with the development of this satellite to ensure reliability within the constraints of low-cost and short-term development. In addition, for the development of a propulsion system for small satellites, we have completed the development of a green propellant propulsion system and on-orbit demonstration and plan to enter the small satellite market in the future. Furthermore, we have received an order from JAXA for the main thruster and propellant tank for the Smart Lander for Investigating Moon (SLIM) and are currently carrying out development. We also plan to apply them to future space exploration using small satellites or explorers.