40 Consultation in the field of custom fabrication of oil and gas industrial machines; Consulting services in the field of water treatment; Oil refinery services; Refining of petrochemicals; Treatment of waste water; Treatment of water; Waste water treatment services; Water treatment services
37 Oil and gas industrial machine cleaning services; Technical consulting related to the installation of oil and gas equipment, control systems, and machinery
45 Advice and consultancy on environmental regulatory matters
42 Environmental services, namely, design for others in the field of environmental engineering; Environmental services, namely, technical consultation in the field of environmental science; Environmental testing and inspection services