[Class : 11] Biomass Steam And Hot Water Boilers And Furnaces; Apparatus For Drying Biomass Residues; Heating Apparatus For Use In The Treatment Of Waste Materials; Biomass Powered Heating And Combustion Systems; Pellet, Chip And Log Boilers; Combustors And Furnaces For Generating Energy From Biomass (Residues). [Class : 37] Installation, Maintenance And Repair Of Installati...