![]() Calumet Electronics Calumet Electronics is a company that designs and manufactures printed circuit boards (PCBs). | ![]() Wartech Engineering Wartech Engineering is a company that provides manufacturing and engineering solutions. | Sierra Circuits Sierra Circuits (also known as Sierra Proto Express) is a company that manufactures and assembles printed circuit boards. | |
Founding Date | Founding Date 1968 | Founding Date 2012 | Founding Date 1986 |
Type | Type Private | Type Private | Type Private |
Tags | |||
Locations | Locations Calumet, US HQ | Locations Romulus, US HQ | Locations Sunnyvale, US HQ Delta, CA |
Employees | Employees 1186% increase | Employees 652% decrease | Employees 478 |
Operating ⚠ | |||
Certifications and Compliance | Certifications and Compliance N/A | Certifications and Compliance 2 (Jun, 2024) | Certifications and Compliance 10 (Jun, 2024) |
Industries Served | Industries Served N/A | Industries Served 2 (Jun, 2024) | Industries Served 8 (Jun, 2024) |

Wartech Engineering is a company that provides manufacturing and engineering solutions.
View companySierra Circuits (also known as Sierra Proto Express) is a company that manufactures and assembles printed circuit boards.
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