(1) Water treatment equipment, waste treatment equipment, air pollution prevention equipment, other pollution prevention equipment, and environment improvement equipment
(2) Drinking-water production equipment, pure-water production equipment, functional-water production equipment, and other water production equipment
(3) Subcontract business for commissioning, maintenance/operations management, and cleaning of water treatment facilities, environmental sanitation facilities, waste treatment facilities, and pollution prevention facilities
(4) Agency business for fee collection and accounting processes related to water treatment facilities, environmental sanitation facilities, waste treatment facilities, and pollution prevention facilities, and consulting business
(5) Manufacture, installation, repairs, modifications, sales, and rental of water treatment, environmental sanitation, waste treatment, and pollution prevention facilities, as well as related equipment, systems, parts, and software
(6) Processing and recycling of wastewater, waste, and contaminated soil
(7) Analysis and measurement of water quality, air quality, gases, odors, industrial waste, soil, etc.
(8) Construction business, construction consulting business, architectural design, construction supervision
(9) Environment improvement
(10) Manufacture and sales of chemicals
(11) Renewable energy
(12) Designated administrator service, all-inclusive private subcontract, and private funds for the preceding items
(13) Worker dispatching undertaking
(14) All businesses incidental to or related to the preceding items
