the boiler is used in Painting package,metal, Architecture, cement, Air-conditionin, electrical and so ... drying.8. Metal: pickling, electroplating, painting package, oil bath, heat treatment9. Painting package: painting bake dry, car, plane, heating ... dissolved insulation13. Air-conditioning: radiant heating14. Others: application in all kinds of high temperature source below 350 .YLW horizontal ...