... Intelligent control system: PLC and 5.7 touch panel, multi-level protection.5. Fiberglass heat preservation: low surface temperature ... Corrugated hearth: more safety and increase convection.7. Multi-level sealing for flue gas chamber: no flue gas leakage.8. ... . 13. Applicable fuels: gas, oil, dual fuel.Application: - Providing steam for industrial users: paper mills, pharmacy mills, tobacco factories, ...