GROUP FOUR TRANSDUCERS INC

Mining Machinery and Equipment Manufacturing

This includes establishments primarily engaged in (1) manufacturing underground mining machinery and equipment, such as coal breakers, mining cars, core drills, coal cutters, and rock drills, and (2) manufacturing mineral beneficiating machinery and equipment used in surface or underground mines.

Oil and Gas Field Machinery and Equipment Manufacturing

This includes establishments primarily engaged in (1) manufacturing oil and gas field machinery and equipment, such as oil and gas field drilling machinery and equipment; oil and gas field production machinery and equipment; and oil and gas field derricks, and (2) manufacturing water well drilling machinery.

Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing

This includes establishments primarily engaged in manufacturing industrial trucks, tractors, trailers, and stackers (i.e., truck-type) such as forklifts, pallet loaders and unloaders, and portable loading docks.

Packaging Machinery Manufacturing

This includes establishments primarily engaged in manufacturing packaging machinery, such as wrapping, bottling, canning, and labeling machinery.

All Other Miscellaneous General Purpose Machinery Manufacturing

This includes establishments primarily engaged in manufacturing general purpose machinery (except ventilating, heating, air-conditioning, and commercial refrigeration equipment; metalworking machinery; engines, turbines, and power transmission equipment; pumps and compressors; material handling equipment; power-driven handtools; welding and soldering equipment; packaging machinery; industrial process furnaces and ovens; fluid power cylinders and actuators; and fluid power pumps and motors).

Illustrative Examples:

Automatic fire sprinkler systems manufacturing
Baling machinery (e.g., paper, scrap metal) manufacturing
Bridge and gate lifting machinery manufacturing
Centrifuges, industrial and laboratory-type, manufacturing
Cremating ovens manufacturing
General purpose-type sieves and screening equipment manufacturing
Hydraulic and pneumatic jacks manufacturing
Industrial and general purpose-type filters (except internal combustion engine, warm air furnace) manufacturing
Scales and balances manufacturing

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing

This includes establishments primarily engaged in one or more of the following: (1) manufacturing electronic fixed and variable capacitors and condensers; (2) manufacturing electronic resistors, such as fixed and variable resistors, resistor networks, thermistors, and varistors; and (3) manufacturing electronic inductors, such as coils and transformers.

Electronic Connector Manufacturing

This includes establishments primarily engaged in manufacturing electronic connectors, such as coaxial, cylindrical, rack and panel, pin and sleeve, printed circuit, and fiber optic.

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use

This includes establishments primarily engaged in manufacturing automatic controls and regulators for applications, such as heating, air-conditioning, refrigeration, and appliances.

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables

This includes establishments primarily engaged in manufacturing instruments and related devices for measuring, displaying, indicating, recording, transmitting, and controlling industrial process variables. These instruments measure, display, or control (monitor, analyze, and so forth) industrial process variables, such as temperature, humidity, pressure, vacuum, combustion, flow, level, viscosity, density, acidity, concentration, and rotation.

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals

This includes establishments primarily engaged in manufacturing instruments for measuring and testing the characteristics of electricity and electrical signals. Examples of products made by these establishments are circuit and continuity testers, voltmeters, ohm meters, wattmeters, multimeters, and semiconductor test equipment.

Other Measuring and Controlling Device Manufacturing

This includes establishments primarily engaged in manufacturing measuring and controlling devices (except search, detection, navigation, guidance, aeronautical, and nautical instruments and systems; automatic environmental controls for residential, commercial, and appliance use; instruments for measurement, display, and control of industrial process variables; totalizing fluid meters and counting devices; instruments for measuring and testing electricity and electrical signals; analytical laboratory instruments; irradiation equipment; and electromedical and electrotherapeutic apparatus).

Illustrative Examples:

Aircraft engine instruments manufacturing
Automotive emissions testing equipment manufacturing
Clocks assembling
Meteorological instruments manufacturing
Physical properties testing and inspection equipment manufacturing
Polygraph machines manufacturing
Radiation detection and monitoring instruments manufacturing
Surveying instruments manufacturing
Thermometers, liquid-in-glass and bimetal types (except medical), manufacturing
Watches (except smartwatches) and parts (except crystals) manufacturing

Other Commercial Equipment Merchant Wholesalers

Establishments in this category are primarly engaged in the merchant wholesale distribution of commercial and related machines and equipment (except photographic equipment and supplies; office equipment; and computers and computer peripheral equipment and software) generally used in restaurants and stores.

Illustrative Examples:

Balances and scales (except laboratory) merchant wholesalers
Commercial shelving merchant wholesalers
Coin- or card-operated merchandising machine merchant wholesalers
Electrical signs merchant wholesalers
Commercial chinaware merchant wholesalers
Partitions merchant wholesalers
Commercial cooking equipment merchant wholesalers
Store fixtures (except refrigerated) merchant wholesalers

Other Professional Equipment and Supplies Merchant Wholesalers

Establishments in this category are primarly engaged in the merchant wholesale distribution of professional equipment and supplies (except ophthalmic goods and medical, dental, and hospital equipment and supplies).

Illustrative Examples:

Church supplies (except silverware, plated ware) merchant wholesalers
School equipment and supplies (except books, furniture) merchant wholesalers
Drafting tables and instruments merchant wholesalers
Scientific instruments merchant wholesalers
Laboratory equipment (except medical, dental) merchant wholesalers
Surveying equipment and supplies merchant wholesalers

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

Establishments in this category are primarly 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.

Support Activities for Rail Transportation

Establishments in this category are primarly engaged in providing specialized services for railroad transportation, including servicing, routine repairing (except factory conversion, overhaul, or rebuilding of rolling stock), and maintaining rail cars; loading and unloading rail cars; and operating independent terminals.