H

Maintenance, installation, repair, upgrading, retrofitting and refurbishment of industrial plants and machinery, fans, extractor fans, dampers, blowers, compressors, circulators, gas circulators, cooling, air conditioning, ventilating, heating and environmental control apparatus and installations, heat regenerators, air reheaters, incinerators, pre-heaters, heat exchangers, gearboxes and parts and fittings for all of the aforesaid; technical consultancy and advisory services relating to all of the aforesaid services

Custom manufacture and assembly of electronic equipment for others; and consultation relating to all of the aforesaid

Engineering services; research, design and development of fans, extractor fans, dampers, blowers, compressors, circulators, gas circulators, cooling, air conditioning, ventilating, heating and environmental control apparatus and installations, heat regenerators, air reheaters, incinerators, pre-heaters, heat exchangers, gearboxes and parts and fittings for all of the aforesaid; design and development of computer software; design and development of acoustic simulation software; research in the field of linear and non-linear stress analysis, acoustic analysis, structural dynamics, metal fatigue, metal fracture, metal creep site strain gauging and testing; research, design and development of electronic equipment; vibration assessment, on site vibration assessment and performance testing of fans, extractor fans, dampers, blowers, compressors, circulators, gas circulators, cooling, air conditioning, ventilating, heating and environmental control apparatus and installations, heat regenerators, air reheaters, incinerators, pre-heaters, heat exchangers, gearboxes and parts and fittings for all of the aforesaid; efficiency analysis of manufacturing and recycling plant operations; vibration testing, acoustic testing, strain testing, operation and performance testing, metal fatigue analysis, metal fracture analysis and metal creep analysis of fans, extractor fans, dampers, blowers, compressors, circulators, gas circulators, cooling, air conditioning, ventilating, heating and environmental control apparatus and installations, heat regenerators, air reheaters, incinerators, pre-heaters, heat exchangers, gearboxes and parts and fittings for all of the aforesaid; and providing advisory and consultancy services relating to all of the aforesaid services