2007, Dec. Site renewal for North America Distributor information is updated.[NEW] 2007, Sept. Site renewal for North America San-Ei appoints Retrowater Produx as the new master distributor. 2007, July Site renewal for North America TOH product specification info. is updated! 2007, April Site renewal for North America TOH product information is updated! 2006,March Site renewal for North America. Contact information is changed, due to the business form change. 2004,January Site renewal for Asia