KEYSTONE ENERGY SYSTEMS, LLC

Glass and Glazing Contractors

Establishments in this category are primarly engaged in installing glass panes in prepared openings (i.e., glazing work) and other glass work for buildings. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Decorative glass and mirror installation
Glazing contractors
Glass cladding installation
Stained glass installation
Window pane or sheet installation
Glass coating and tinting (except automotive) contractors
Glass installation (except automotive) contractors

Other Foundation, Structure, and Building Exterior Contractors

Establishments in this category are primarly engaged in building foundation and structure trades work (except poured concrete, structural steel, precast concrete, framing, masonry, glass and glazing, roofing, and siding). The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Curtain wall, metal, installation
Forms for poured concrete, erecting and dismantling
Welding, on-site, contractors
Ornamental metal work installation
Fire escape installation
Decorative steel and wrought iron work installation

Electrical Contractors and Other Wiring Installation Contractors

Establishments in this category are primarly engaged in installing and servicing electrical wiring and equipment. Contractors included in this industry may include both the parts and labor when performing work. These contractors may perform new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Airport runway lighting contractors
Fiber optic cable (except transmission line) contractors
Alarm system (e.g., fire, burglar), electric, installation only
Highway, street, and bridge lighting and electrical signal installation
Audio equipment (except automotive) installation contractors
Home automation system installation
Lighting system installation
Cable television hookup contractors
Telecommunications equipment and wiring (except transmission line) installation contractors
Computer and network cable installation
Traffic signal installation
Environmental control system installation
Cable splicing, electrical or fiber optic

Drywall and Insulation Contractors

Establishments in this category are primarly engaged in drywall, plaster work, and building insulation work. Plaster work includes applying plain or ornamental plaster, and installation of lath to receive plaster. The work performed may include new work, additions, alterations, maintenance, and repairs. Establishments primarily engaged in providing firestop services are included in this industry.

Illustrative Examples:

Acoustical ceiling tile and panel installation
Lathing contractors
Drop ceiling installation
Plastering (i.e., ornamental, plain) contractors
Drywall contractors
Soundproofing contractors
Firestop contractors
Fresco (i.e., decorative plaster finishing) contractors
Taping and finishing drywall
Gypsum board installation
Wall cavity and attic space insulation installation

Finish Carpentry Contractors

Establishments in this category are primarly engaged in finish carpentry work. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Built-in wood cabinets constructed on site
Molding or trim, wood or plastic, installation
Countertop (except ceramic tile or stone), residential-type, installation
Paneling installation
Door and window frame construction
Garage door, residential-type, installation
Prefabricated kitchen and bath cabinet, residential-type, installation
Ship joinery contractors
Millwork installation
Window and door, residential-type, of any material, prefabricated, installation

Other Building Finishing Contractors

Establishments in this category are primarly engaged in building finishing trade work (except drywall, plaster, and insulation work; painting and wall covering work; flooring work; tile and terrazzo work; and finish carpentry work). The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Bathtub refinishing, on-site
Fabricating metal cabinets or countertops on site
Closet organizer system installation
Modular furniture system attachment and installation
Concrete coating, glazing, or sealing
Trade show exhibit installation and dismantling
Countertop and cabinet, metal (except residential-type), installation
Waterproofing contractors
Drapery fixture (e.g., hardware, rods, tracks) installation
Window shade and blind installation

Engineering Services

Establishments in this category are primarly engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems. The assignments undertaken by these establishments may involve any of the following activities: provision of advice, preparation of feasibility studies, preparation of preliminary and final plans and designs, provision of technical services during the construction or installation phase, inspection and evaluation of engineering projects, and related services.

Illustrative Examples:

Civil engineering services
Environmental engineering services
Construction engineering services
Mechanical engineering services
Engineers' offices
Robotics automation engineering services

Building Inspection Services

Establishments in this category are primarly engaged in providing building inspection services. These establishments typically evaluate all aspects of the building structure and component systems and prepare a report on the physical condition of the property, generally for buyers or others involved in real estate transactions. Building inspection bureaus and establishments providing home inspection services are included in this industry.

Other Scientific and Technical Consulting Services

Establishments in this category are primarly engaged in providing advice and assistance to businesses and other organizations on scientific and technical issues (except environmental).

Illustrative Examples:

Agricultural consulting services
Motion picture consulting services
Biological consulting services
Physics consulting services
Chemical consulting services
Radio consulting services
Economic consulting services
Safety consulting services
Energy consulting services
Security consulting services