POLYHISTOR INTERNATIONAL, INC.

Hardware Manufacturing

Establishments in this category are primarly engaged in manufacturing metal hardware, such as metal hinges, metal handles, keys, and locks (except coin- or card-operated, time locks).

Machine Shops

This category includes establishments known as machine shops primarily engaged in machining metal and plastic parts and parts of other composite materials on a job or order basis. Generally machine shop jobs are low volume using machine tools, such as lathes (including computer numerically controlled); automatic screw machines; and machines for boring, grinding, milling, and additive manufacturing.

Military Armored Vehicle, Tank, and Tank Component Manufacturing

This includes establishments primarily engaged in manufacturing complete military armored vehicles, combat tanks, specialized components for combat tanks, and self-propelled weapons.

All Other Miscellaneous Manufacturing

This includes establishments primarily engaged in miscellaneous manufacturing (except medical equipment and supplies, jewelry and silverware, sporting and athletic goods, dolls, toys, games, office supplies, signs, gaskets, packing, and sealing devices, musical instruments, fasteners, buttons, needles, pins, brooms, brushes, mops, and burial caskets).

Illustrative Examples:

Artificial Christmas trees manufacturing
Candles manufacturing
Christmas tree ornaments (except glass and electric) manufacturing
Cigarette lighters (except precious metal) manufacturing
Coin- or card-operated amusement machines (except jukebox) manufacturing
Electronic cigarettes manufacturing
Hairpieces (e.g., wigs, toupees, wiglets) manufacturing
Portable fire extinguishers manufacturing
Potpourri manufacturing
Tobacco pipes manufacturing
Umbrellas manufacturing

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