42 Scientific and technological services and research and design relating thereto including those in respect of air conditioners, water coolers, water purifiers, air purifiers, refrigerators and freezers; industrial analysis and research including that related to air conditioners, water coolers, water purifiers, air purifiers, refrigerators and freezers; technical research including research related to air conditioners, water coolers, water purifiers, air purifiers, refrigerators and freezers; quality control including that related to air conditioners, water coolers, water purifiers, air purifiers, refrigerators and freezers