Water heaters; Furnace boilers; Industrial boilers; Solar furnaces; Incinerators; Steam accumulators; Industrial refining towers for distillation; Ash pits for furnaces; Boiler pipes for heating installations; Heating elements; Industrial furnaces; Heat-stabilized polypropylene pipes for heating installations; Purification installations for sewage; Fume extractors; Bioreactors for use in the treatment of wastewater; Bioreactors for use in the treatment of waste; Solar collectors for heating; Dampers for furnaces
Environmental Control Apparatus