About 1 Trademarks found that are owned by Japan Gas Appliances Inspection Association

Baker's ovens, barbeques, bathtub fittings, shower fittings, sink fittings, sauna fittings, saunas, bath tubs, bath tubs for sitz baths, boiler flues, boiler feeders, boilers for domestic and commercial use namely, gas fired steam heating boilers, hot water supply boilers and hot water heating boilers, bread toasters, chimney flues, coffee roasters, coffee brewers, stoves, clothes dryers, paint dryers, drinking water filters, fireplaces, furnaces, gas burners, gas generators, gas lamps, gas lighters, germicidal burners, heat exchangers, bath heaters, water heaters, space heaters, incinerators, kitchen ranges, ovens, broilers, gas roasters, showers, solar collectors, solar water heaters, steam generators, electric lamps, hydrants, ice machines, microwave ovens, plate warmers, pocket warmers, milk sterilizers, steam generators, refrigerators, water softeners and warming pans

The Japanese characters featured in the mark translate to "certificate" and are pronounced "ninshou".