WATER FILTER EXCHANGE, INC

Water Supply and Irrigation Systems

Establishments in this category are primarly engaged in operating water treatment plants and/or operating water supply systems. The water supply system may include pumping stations, aqueducts, and/or distribution mains. The water may be used for drinking, irrigation, or other uses.

All Other Miscellaneous Chemical Product and Preparation Manufacturing

This includes establishments primarily engaged in manufacturing chemical products (except basic chemicals, resins, and synthetic rubber; cellulosic and noncellulosic fibers and filaments; pesticides, fertilizers, and other agricultural chemicals; pharmaceuticals and medicines; paints, coatings and adhesives; soaps, cleaning compounds, and toilet preparations; printing inks; explosives; custom compounding of purchased resins; and photographic films, papers, plates, chemicals, and copy toners).

Illustrative Examples:

Activated carbon and charcoal manufacturing
Antifreeze preparations manufacturing
Electronic cigarette vapor liquids, including closed refills, manufacturing
Industrial salt manufacturing
Lighter fluids (e.g., charcoal, cigarette) manufacturing
Matches and matchbook manufacturing
Pyrotechnics (e.g., flares, flashlight bombs, signals) manufacturing
Sugar substitutes (i.e., synthetic sweeteners blended with other ingredients) made from purchased synthetic sweeteners
Swimming pool chemical preparations manufacturing
Writing inks manufacturing

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing

This includes establishments primarily engaged in (1) manufacturing air-conditioning (except motor vehicle) and warm air furnace equipment and/or (2) manufacturing commercial and industrial refrigeration and freezer equipment.

Illustrative Examples:

Air-conditioning and warm air heating combination units manufacturing
Air-conditioning compressors (except motor vehicle) manufacturing
Air-conditioning condensers and condensing units manufacturing
Dehumidifiers (except portable electric) manufacturing
Heat pumps manufacturing
Humidifying equipment (except portable) manufacturing
Refrigerated counter and display cases manufacturing
Refrigerated drinking fountains manufacturing
Snow making machinery manufacturing
Soda fountain cooling and dispensing equipment manufacturing

Professional Organizations

Establishments in this category are primarly engaged in promoting the professional interests of their members and the profession as a whole. These establishments may conduct research; develop statistics; sponsor quality and certification standards; lobby public officials; or publish newsletters, books, or periodicals for distribution to their members.

Illustrative Examples:

Bar associations
Learned societies
Dentists' associations
Peer review boards
Engineers' associations
Professional standards review boards
Health professionals' associations
Scientists' associations