... machine, with the port directly connected to the boiler, automatic intelligent control. One duty, automatically.8. ... of harmful gases, protect the environment, not corrosion boiler, boiler life extension of more than 3 years.9. ... than a ton of coal-fired boilers burning coal directly to cost savings of 30-40 ... yuan, more than oil, gas direct fired boiler oil, burning gas savings cost 50-70%, the annual ...