... -special industry boiler adopting light oil or heavy oil as fuel, heat conduction oil as heat carrier. Circulating pump ... pass flue, the efficiency is high up 95%.4. Perfect operation controlling and safety Monitoring device, multiple ... , heating, Insulation, Plastics, Hot pressing, rolling, extrusion, Vulcanization 4. Fiber: synthesis, melting, Spinning, Molded, Solid heat, drying extension5 ...