Industrial gas; Industrial gas in the form of gaseous and liquefied gas stored and transported in bulk; industrial gas in the form of gaseous and liquefied gas, stored, transported and distributed in cylinders and industrial gas distributors; Gases and gas mixtures, in liquid or gaseous form for use in industry; Industrial chemicals; Chemicals for use in industry and science; Chemical preparations for use in industry; chemicals for industrial and scientific purposes; chemicals for use in agriculture except fungicides, herbicides, insecticides and parasiticides

Machines and apparatus for use in industrial processes; Reactors and electronic apparatuses for extraction, separation and recovery of gases and chemicals from natural gas and other gaseous materials, and related equipment and parts thereof; machines for manufacturing and processing chemicals and gases, and parts therefor; separating machines for processing chemicals and gases, and parts therefor; blending machines for processing chemicals and gases, and parts therefor; machines for on-site production of chemical products, gases and gas mixtures, and parts therefor; Separating machines for chemical processing for separating technical gases and gas mixtures, refinery gases, natural gas and air gases, and parts therefor; Facilities, installations and apparatus for the production, liquefaction, drying, separation, extraction, purification, capture, storage and distribution of chemicals, gases and gas mixtures in liquid or gaseous form, and parts therefor; Facilities, installations and apparatus for the processing and purification of natural gas, and parts therefor

Apparatus and instruments for use in the purification, separation and sterilization of liquids and gases used in the biotechnology, pharmaceutical, medical, biopharmaceutical and food and beverage industries; Ionization apparatus for the treatment of liquids and gases for industrial, commercial or agricultural use; Ionization apparatus for the treatment of air; Fluid separation apparatus for separation of gas from liquid in a chemical or oil refinery; Air separators, namely, separators for the cleaning and purification of air

Installation, maintenance and repair of apparatus, equipment and installations for extraction, separation, recovery and purification of chemicals, gases and gas mixtures from natural gas and other gaseous materials; Installation, maintenance and repair of apparatus, equipment and installations for processing, blending and production of chemicals, gases and gas mixtures; Installation, maintenance and repair of apparatus, equipment and installations for purification and processing of natural gas; Maintenance and repair of natural gas production and processing facilities and installations

Engineering research and consulting services and technical consulting services, in the fields of extraction, separation, recovery, purification, production, processing, and blending of chemicals, gases and gas mixtures; Engineering research and consulting services and technical consulting services, in the fields of purification and processing of natural gas; Technical consulting services in the field of engineering; Engineering research and consulting services and technical consulting services, in the field of materials processing; Engineering services, namely, designing industrial engineering processes and industrial installations; Designing industrial installations for the extraction, separation, recovery, purification, production, processing, and blending of chemicals, gases and gas mixtures and for the purification and processing of natural gas; Chemical analysis