7
Apparatus and installations for the production of energy, the treatment of petroleum and chemical products; Machines for petroleum refining, the treatment of petroleum and chemical products; Machines for loading and unloading catalyst; Machines for loading and unloading inert materials in reactors
37
Construction, commissioning, servicing, maintenance and repair of reactors, of refineries; Construction, servicing and maintenance of refineries and of structures for the processing of petroleum and chemical products; Construction, servicing and maintenance of oil refining machines, processing of petroleum and chemical products, loading and withdrawal of catalytic converters of reactors, loading of inert materials into reactors
39
Transport, distribution (delivery), storage, supply of petroleum, gas and chemical products and products for the treatment of catalysts; Loading and unloading service of catalyst and inert materials
42
Evaluations, estimates and research in the scientific and technological fields rendered by engineers in the field of catalytic converter processing, catalytic converter residue, emptying reactors; Technical consultancy and assistance in relation to the petroleum, hydrocarbon, catalytic converter residue refining industry; Technical know-how and consultancy relating to the processing of petroleum products; Technical know-how and consultancy relating to the loading and withdrawal of catalytic convertors and inert materials