Cleaning and maintenance services provide and perform building or facility cleaning and maintenance or repair on a daily, weekly, or ad hoc basis

Test equipment and instrument repair services test and repair industrial equipment and instruments. They specialize in the test and repair of acoustic and vibration equipment, electrical and electronic test equipment, laboratory equipment and instruments, inspection instruments or non-destructive testing (NDT) equipment, or specialty testing equipment and instruments.

Environmental test equipment services for environmental test chambers, reactors, baths, incubators, laboratory ovens and furnaces, and vibrational shakers. Services may include repair, calibration, upgrading, rebuilding, installation, training and replacement.

Industrial electronic repair services fix, repair, overhaul, refurbish, and warranty industrial electronic equipment such as power supplies, motor drives, controllers, meters, and oscilloscopes.

Calibration and repair services for vibration, acoustic, electrical / electronic test, environmental, dimensional, NDT, analytical, process and other specialty instruments, sensors and related equipment.

General contracting services serve as a single point of responsibility for construction projects. These companies perform layout, scheduling, estimating, and sub-contracting activities. General contractors also complete the construction itself

Engineering consulting firms provide engineering services and expertise to companies in need of a specialized skill-set.  Professionals in this category work with clients to define solutions to problems or to help determine and recommend the best course of action for a given initiative.

Lining and wear protection services suppliers provide installation or application of wear protective liners, tile liners, spray on lining systems and/or high build coatings to protect an underlying surface from wear or erosion.

Instructional seminars and training includes non-credit programs; courses or seminars in engineering, science, technology, management, and other specialized subject areas; and production operation or application-specific training.

Electrical contracting services install and maintain electrical distribution equipment; interior, exterior and municipal lighting; security systems and closed circuit television systems (CCTV); and information technology or IT systems.

Logistics services provide a variety of sourcing, warehousing, transportation, and supply chain management services.

Sandblasting and shot peening services bombard media against a surface to meet surface condition requirements. Sandblasting uses abrasive grain to roughen, smooth, shape or clean surfaces. Shot peening uses rounded media to strengthen or dimple a surface.

Electrical utility services are involved in the design, siting, construction, service, repair, and inspection of electrical utility facilities, substations, and transmission and distribution lines.

Refractory services for manufacturing, installing and repairing refractory shapes or monolithic refractories.

Facility management services perform building operations and maintenance, project management, subcontractor management, energy management, budget planning, commissioning and de-commissioning services for buildings and facilities