Heating installations; Air conditioning apparatus; Air cooling apparatus; drying apparatus for use in polymerization installations; Industrial heating apparatus, namely, heat generators, heated polymerization installations and melting furnaces
Environmental Control ApparatusReparation and maintenance of heating apparatus, air conditioning apparatus, cooling apparatus, and drying apparatus, reparation and maintenance of industrial heating apparatus, namely, heat generating apparatus, polymerisation and melting apparatus and installations
Building Construction and Repair