1. Three pass wetback design,with corrugated furnace which is with large heating surface.
2. Adopt threaded pipe as the smoke pipe to optimize the heat conductivity with high heating efficiency.
3. The front smoke case is connected with chain type, convenient to open;double layered doors for heat.
4. Adopt advanced controller, with the functions of timing control, automatic working records, leakage checking and alarming ,pressure protection, temperature controlling and water shortage protection etc.
5. Condensation heat exchanger can be added in the smoke outlet to decrease the smoke discharging temperature, absorb the sensible and latent heat in the smoke, improve the heating efficiency(up to 95％).