Machines for loading and unloading catalysts; machines for loading and unloading inert materials in reactors
MachineryConstruction, construction planning, servicing, maintenance and repair of industrial plants in the nature of oil-refining reactors and oil refineries; building construction, servicing and maintenance of petroleum refineries and structures for the processing of petroleum and chemical products; servicing and maintenance of machines for refining petroleum, processing petroleum and chemical products, loading and removing catalyst from reactors and loading inert materials into reactors
Building Construction and Repair