Joban Kosan. 

Joban Kosan Co.,Ltd. engages in the tourism, trading, manufacturing, and transportation businesses in Japan and internationally. It is involved in the operation of resort under the Spa Resort Hawaiians name; and Spa Resort Hawaiians golf course. The company also engages in the wholesale of imported coal; heavy oil, and LP gas; kerosene, gasoline, light oil, lubricating oil, and petrochemical products; wood pellets; and construction materials, such as cement, ready-mixed concrete, etc. In addition, it manufactures cast iron products, such as hydrostar motors that are used in the marine equipment and industrial machinery; and hydraulic motor body, as well as provides cargo transportation services. The company was founded in 1944 and is headquartered in Iwaki, Japan.