Installation, maintenance and repair of computer hardware; Rebuilding machines that have been worn or partially destroyed; Machinery installation, maintenance and repair; Boiler cleaning and repair; Pump repair and maintenance; Installation, maintenance and repair of measuring or testing machines and instruments; Installation, maintenance and repair of semiconductor equipment for others; Replacement of worn or defective electronic parts of semiconductor equipment for others; Computer hardware installation, maintenance and repair; Electrical equipment installation, maintenance and repair, namely, maintenance and repair services for machines, apparatus and instruments used in electronics, mechanical equipment, microlithography, semi-conductor, integrated circuit, magnetic domain memories and integrated optical systems industries; Remanufacture of semiconductor equipment, namely, front end process manufacturing equipment involved in PVD, CVD, Etch, CMP, Implant and other semiconductor processes and associated parts to the order or specifications of others; Updating of semiconductor equipment, namely, the rearrangement or restructuring and optimization of elements, components, designs or settings of semiconductor equipment, namely, front end process manufacturing equipment involved in PVD, CVD, Etch, CMP, Implant and other semiconductor processes; Installation of semiconductor equipment, namely, front end process manufacturing equipment involved in PVD, CVD, Etch, CMP, Implant and other semiconductor processes and associated parts, consumables, upgrade kits and peripheral equipment, namely, vacuum pumps, heat exchangers and point of use gas abatement; Technical support services, namely, troubleshooting in the nature of repair and modification of semiconductor manufacturing equipment; Repair and maintenance of measuring and testing machines and instruments