Water aeration equipment, namely, a submerged air diffuser and control unit sold therewith for increasing the dissolved oxygen level of lakes or ponds

liquid and gas purification and filtration units utilizing proprietary membranes for industrial use

Protection and safety apparatus, namely, inflatable flotation devices

PRESSURIZED TANKS, NAMELY SCUBA TANKS

COMMERCIAL BUILDING CLEANING SERVICES, NAMELY CLEANING BOILERS, AIR CONDITIONERS, AND AIR FILTRATION SYSTEMS IN COMMERCIAL BUILDINGS BY THE USE OF CHEMICALS AND OTHER MEANS