36 brokerage in the field of natural gas and liquid propane fuel to residential, commercial, and industrial users; utility services, namely, sales, generation, and transmission of electricity; and construction of pipelines
37 residential and commercial gas equipment; repair, maintenance, inspection, and/or installation thereof
39 delivery of natural gas by pipelines to residential, commercial, and industrial customers; delivery of liquid propane fuel by tank trucks and other vehicles to residential, commercial, and industrial customers
42 marketing of natural gas and liquid propane fuel to residential, commercial, and industrial users