![]() SDP/SI SDP/SI (Stock Drive Products/Sterling Instrument) provides mechanical based design, engineering, and manufacturing services for medical, aerospace, industrial, and commercial applications.
| ![]() Spuhl Spühl is a mechanical engineering company that develops and produces wire-forming machines to make innerspring units for mattresses and upholstery. | ||
Founding Date | Founding Date 1976 | Founding Date 1950 | Founding Date 1877 |
Type | Type Private | Type Subsidiary | Type Subsidiary |
Tags | |||
Locations | Locations Warminster, US HQ Allentown, US | Locations Hicksville, US HQ | Locations Wittenbach, CH HQ |
Employees | Employees 11 | Employees 872% increase | Employees 90 |

SDP/SI (Stock Drive Products/Sterling Instrument) provides mechanical based design, engineering, and manufacturing services for medical, aerospace, industrial, and commercial applications.
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Spühl is a mechanical engineering company that develops and produces wire-forming machines to make innerspring units for mattresses and upholstery.
View company