MARS TRADING AND CONTRACTING COMPANY

Specialty Trade Contractors

NAICS #238 | The Specialty Trade Contractors subsector comprises establishments whose primary activity is performing specific activities (e.g., pouring concrete, site preparation, plumbing, painting, and electrical work) involved in building construction or other activities that are similar for all types of construction but that are not responsible for the entire project. The work performed may include new work, additions, alterations, maintenance, and repairs. The production work performed by establishments in this subsector is usually subcontracted from establishments of the general contractor type or operative builders but, especially in remodeling and repair construction, work also may be done directly for the owner of the property. Specialty trade contractors usually perform most of their work at the construction site, although they may have shops where they perform prefabrication and other work. Establishments primarily engaged in preparing sites for new construction are also included in this subsector.

There are substantial differences in types of equipment, work force skills, and other inputs required by specialty trade contractors. Establishments in this subsector are classified based on the underlying production function for the specialty trade in which they specialize. Throughout the Specialty Trade Contractors subsector, establishments commonly provide both the parts and labor required to complete work. For example, electrical contractors supply the current-carrying and noncurrent-carrying wiring devices that are required to install a circuit. Plumbing, Heating and Air-Conditioning contractors also supply the parts required to complete a contract.

Establishments that specialize in activities primarily related to heavy and civil engineering construction that are not normally performed on buildings, such as the painting of lines on highways are classified in Subsector 237, Heavy and Civil Engineering Construction.

Establishments that are primarily engaged in selling construction materials are classified in Sector 42, Wholesale Trade, or Sector 44-45, Retail Trade, based on the characteristics of the selling unit.

Electrical Contractors

NAICS #23821 | This industry comprises establishments primarily engaged in installing and servicing electrical wiring and equipment. Electrical contractors included in this industry may include both the parts and labor when performing work. Electrical contractors may perform new work, additions, alterations, maintenance, and repairs. Installing and maintaining telecommunications lines by telecommunications companies--are classified in Subsector 517, Telecommunications; Constructing power and communication transmission lines--are classified in Industry 237130, Power and Communication Line and Related Structures Construction; and Burglar and fire alarm installation combined with sales, maintenance, or monitoring services--are classified in U.S. Industry 561621, Security Systems Services (except Locksmiths).

Chemical Manufacturing

NAICS #325 | The Chemical Manufacturing subsector is based on the transformation of organic and inorganic raw materials by a chemical process and the formulation of products. This subsector distinguishes the production of basic chemicals that comprise the first industry group from the production of intermediate and end products produced by further processing of basic chemicals that make up the remaining industry groups.

This subsector does not include all industries transforming raw materials by a chemical process. It is common for some chemical processing to occur during mining operations. These beneficiating operations, such as copper concentrating, are classified in Sector 21, Mining. Furthermore, the refining of crude petroleum is included in Subsector 324, Petroleum and Coal Products Manufacturing. In addition, the manufacturing of aluminum oxide is included in Subsector 331, Primary Metal Manufacturing; and beverage distilleries are classified in Subsector 312, Beverage and Tobacco Product Manufacturing. As in the case of these two activities, the grouping of industries into subsectors may take into account the association of the activities performed with other activities in the subsector.

Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers

NAICS #42361 | This industry comprises establishments primarily engaged in the merchant wholesale distribution of electrical construction materials; wiring supplies; electric light fixtures; light bulbs; and/or electrical power equipment for the generation, transmission, distribution, or control of electric energy.

Petroleum and Petroleum Products Merchant Wholesalers

NAICS #4247 |

Wholesale Trade Agents and Brokers

NAICS #42512 | This industry comprises wholesale trade agents and brokers acting on behalf of buyers or sellers in the wholesale distribution of goods. Agents and brokers do not take title to the goods being sold but rather receive a commission or fee for their service. Agents and brokers for all durable and nondurable goods are included in this industry. Establishments acting in the capacity of agents or brokers that operate using the Internet or other electronic means instead of a sales force are classified in Industry 425110, Business to Business Electronic Markets.

Liquefied Petroleum Gas (Bottled Gas) Dealers

NAICS #454312 | This U.S. industry comprises establishments primarily engaged in retailing liquefied petroleum (LP) gas via direct selling.

Engineering Services

NAICS #54133 | This industry comprises establishments primarily 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. Planning and designing computer systems that integrate computer hardware, software, and communication technologies--are classified in U.S. Industry 541512, Computer Systems Design Services; Performing surveying and mapping services of the surface of the earth, including the sea floor,--are classified in Industry 541370, Surveying and Mapping (except Geophysical) Services; Gathering, interpreting, and mapping geophysical data--are classified in Industry 541360, Geophysical Surveying and Mapping Services; Creating and developing designs and specifications that optimize the use, value, and appearance of products--are classified in Industry 541420, Industrial Design Services; Providing advice and assistance to others on environmental issues, such as the control of environmental contamination from pollutants, toxic substances, and hazardous materials-- are classified in Industry 541620, Environmental Consulting Services; and Both the design and construction of buildings, highways, and other structures or in managing construction projects--are classified in Sector 23, Construction, according to the type of project.

All Other Professional, Scientific, and Technical Services

NAICS #54199 | This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; scientific research and development services; advertising and related services; market research and public opinion polling; photographic services; translation and interpretation services; and veterinary services). Providing legal services--are classified in Industry Group 5411, Legal Services; Providing accounting, tax preparation, bookkeeping, and payroll services--are classified in Industry Group 5412, Accounting, Tax Preparation, Bookkeeping, and Payroll Services; Providing architectural, engineering, and related services--are classified in Industry Group 5413, Architectural, Engineering, and Related Services; Providing specialized design services--are classified in Industry Group 5414, Specialized Design Services; Providing computer systems design and related services--are classified in Industry Group 5415, Computer Systems Design and Related Services; Providing management, scientific, and technical consulting services--are classified in Industry Group 5416, Management, Scientific, and Technical Consulting Services; Providing scientific research and development services--are classified in Industry Group 5417, Scientific Research and Development Services; Providing advertising and related services--are classified in Industry Group 5418, Advertising and Related Services; Providing marketing research and public opinion polling--are classified in Industry 541910, Marketing Research and Public Opinion Polling; Providing photographic services--are classified in Industry 54192, Photographic Services; Providing translation and interpretation services--are classified in Industry 541930, Translation and Interpretation Services; Providing veterinary services--are classified in Industry 541940, Veterinary Services; and Providing real estate appraisal services--are classified in Industry 531320, Offices of Real Estate Appraisers.