RASA Corporation (ラサ商事株式会社) is a company that specializes in natural resources, industrial machinery, construction equipment, etc. It provides a range of natural resources, including zircon sand, rutile sand, ilmenite; various machineries, including pumps, valves, and automatic pipe cutters. The company also offers RASA system, a slag granulation plant and PARA-ECO-recycling system for melting such harmful substances as heavy metals and dioxins contained in incinerated ashes in an electric resistance furnace.