... steam, hot air and life water through heat exchange Heat-conduction oil boiler is a kind of ... , Vulcanization 4. Fiber: synthesis, melting, Spinning, Molded, Solid heat, drying extension5. Carbon: melting asphalt, impregnation, mixing, molding6. ... : road melting asphalt, insulation.11. Cement: fuel heating12. Electrical: resin impregnation, dissolved insulation13. Air-conditioning: radiant heating14. ...