Industrial Boiler Market Size By Product (Fire-Tube, Water-Tube), By Capacity (<10 MMBtu/hr, 10 - 25 MMBtu/hr, 25 - 50 MMBtu/hr, 50 - 75 MMBtu/hr, 75 - 100 MMBtu/hr, 100 - 175 MMBtu/hr, 175 - 250 MMBtu/hr, > 250 MMBtu/hr), By Application (Food Processing, Pulp & Paper, Chemical, Refinery, Primary Metal), By Technology (Condensing, Non-Condensing), By Fuel (Natural Gas, Oil, Coal), COVID-19 Impact Analysis, Regional Outlook, Competitive Market Share & Forecast, 2022 – 2028