Online and retail sale of air filters for use in laboratories; Online and retail sale of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of air filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of air purifiers for use in laboratories; Online and retail sale of air purifiers for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of air purifiers for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of MERV air filters for use in laboratories; Online and retail sale of MERV air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of MERV air filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of HEPA air filters for use in laboratories; Online and retail sale of HEPA air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of HEPA air filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of ULPA filters for use in laboratories; Online and retail sale of ULPA filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of ULPA filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of air filtered diffusers for use in laboratories; Online and retail sale of air filtered diffusers for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of air filtered diffusers for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of fan filter units for use in laboratories; Online and retail sale of fan filter units for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of fan filter units for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of cleanroom and laminar flow work benches and tables, ceiling grid systems and hospital isolation stations for use in laboratories; Online and retail sale of cleanroom and laminar flow work benches and tables, ceiling grid systems and hospital isolation stations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of cleanroom and laminar flow work benches and tables, ceiling grid systems and hospital isolation stations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Online and retail sale of laminar air flow systems for cleanrooms for laboratories and pharmacies for use in laboratories; Online and retail sale of laminar air flow systems for cleanrooms for laboratories and pharmacies for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Online and retail sale of laminar air flow systems for cleanrooms for laboratories and pharmacies for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms

installation, maintenance and repair of heating, ventilating, and air conditioning equipment and systems for use in laboratories; installation, maintenance and repair of heating, ventilating, and air conditioning equipment and systems for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; installation, maintenance and repair of heating, ventilating, and air conditioning equipment and systems for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; technical consulting services regarding installation and maintenance of heating, ventilating, and air conditioning equipment and systems for use in laboratories; technical consulting services regarding installation and maintenance of heating, ventilating, and air conditioning equipment and systems for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; technical consulting services regarding installation and maintenance of heating, ventilating, and air conditioning equipment and systems for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; installation, maintenance and repair of laminar air flow systems for use in laboratories; installation, maintenance and repair of laminar air flow systems for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; installation, maintenance and repair of laminar air flow systems for healthcare facilities, namely, operating rooms, patient rooms and hospital isolation rooms

custom manufacture of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in laboratories; custom manufacture of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; custom manufacture of cleanroom air purifiers for use in laboratories; custom manufacture of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; custom manufacture of cleanroom ceiling-recessed and ceiling-suspended lighting incorporating heating, ventilation and air conditioning (HVAC) systems for use in laboratories; custom manufacture of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; custom manufacture of cleanroom work benches incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in laboratories; custom manufacture of cleanroom work benches incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of cleanroom work benches incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; custom manufacture of cleanroom isolation stations incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in laboratories; custom manufacture of cleanroom isolation stations incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of cleanroom isolation stations incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; custom manufacture of air filters for use in laboratories; custom manufacture of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of air filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; custom manufacture of fan filter units for use in laboratories; custom manufacture of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of air filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; custom manufacture of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of laminar air flow systems for cleanrooms for use in laboratories; custom manufacture of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; custom manufacture of laminar air flow systems for health care facilities, namely, operating rooms, patient rooms and hospital isolation rooms

design and development of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in laboratories; design and development of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; design and development of cleanroom air purifiers for use in laboratories; design and development of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; design and development of cleanroom ceiling-recessed and ceiling-suspended lighting incorporating heating, ventilation and air conditioning (HVAC) systems for use in laboratories; design and development of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of cleanroom laminar air flow work benches, work tables, ceiling grid systems, isolation stations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; design and development of cleanroom work benches incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in laboratories; design and development of cleanroom work benches incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of cleanroom work benches incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; design and development of cleanroom isolation stations incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in laboratories; design and development of cleanroom isolation stations incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of cleanroom isolation stations incorporating lighting and heating, ventilation and air conditioning (HVAC) systems for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; design and development of air filters for use in laboratories; design and development of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of air filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; design and development of fan filter units for use in laboratories; design and development of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of air filters for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; design and development of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of laminar air flow systems for cleanrooms for use in laboratories; design and development of air filters for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; design and development of laminar air flow systems for health care facilities, namely, operating rooms, patient rooms and hospital isolation rooms