40 Custom manufacturing satellites and their parts and accessories, namely, thrusters for satellites, attitude control device for satellites, rocket engines for satellites, communication apparatus for satellites, electric control devices for heating management of satellites, electric power supplies for satellites, structural parts for satellites, structural parts for satellite operations, and spacecraft, namely, space vehicles for exploring space, manned space vehicles for space round trip, unmanned space vehicles for space round trip, manned space vehicles, unmanned space vehicles, space vehicles, and structural parts therefor