Chemicals used in industry; unprocessed plastics; other substances and chemicals and petrochemicals, namely, ethylene, polyethylene, copolymers of ethylene and other olefins, and other ethylene-derivatives

Plastics and plastics materials, namely, plastics in the form of powder, granules, pellets, sheets, films, blocks, rods, bottles, drums and tubes; plastics in the form of powder, granules, pellets, sheets, films, blocks, rods, bottles, drums and tubes for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal

Construction and maintenance of plants and buildings; advisory services for the building, maintenance and repair of plants

Treatment, preparation and processing of chemicals