Industrial contracting and maintenance in Elmex is provided by various industrial contractors for different industries. Industrial contacting involves services such as general contracting, facilities maintenance, industrial piping, HVAC, equipment installation, electrical and governmental services. There are separate contractors for operation and maintenance services and for construction. Several contractors provide engineers as well as emergency repair services. Shutdown or rebuild work is also done by industrial contractors. Optical alignment, machining, installation of new parts are also included in the contractors services. Maintenance services include up gradation, refurbishment, equipment maintenance and relocation. Some contractors also provide fast response reactive maintenance and pre planned maintenance facilities.