4
Petroleum, crude oil, condensate, natural gas liquids, crude bitumen, natural gas, liquefied natural gas, hydrocarbon gases, petroleum gas, compressed natural gas, liquefied petroleum gas, coal bed gas, gas hydrates, shale gas, asphaltene, heavy oil
16
Stationery items, namely, bookmarks, folders, drawing rulers, erasers, paper, pads of paper, pens, pencils, paperclips, plastic bags for packaging, calendars
25
Tops (clothing), headwear, jackets, gloves
39
Transportation, storage and delivery of petroleum, condensate, crude bitumen, crude oil, natural gas liquids, natural gas and liquefied natural gas
40
Hydrocarbon production services, including crude oil, petroleum, petroleum condensate, natural gas liquid and natural gas production services; Crude oil processing services; Petroleum processing services; Natural gas processing services; Natural gas liquid processing services; Petroleum condensate processing services; Liquid natural gas processing services; Oil and gas well treatment
42
Exploration for hydrocarbons, including petroleum, crude oil, petroleum condensate, natural gas liquids and natural gas; Monitoring and testing of oil wells, gas wells, drilling rigs, and pump jacks; Technical consultation and research services in the field of exploration, processing and production of crude oil, natural gas, petroleum, liquid natural gas and petroleum condensate; Industrial design services in the field of exploration, processing and production of crude oil, natural gas, petroleum, liquid natural gas and petroleum condensate; Technical advice and consulting services in the fields of production and processing of crude oil, petroleum, natural gas liquids, natural gas and liquid natural gas; Technical advice and consulting services related to the manufacture of oil and gas production equipment, control systems, and machinery