![]() Sierra Electrotek Sierra Electrotek is a company that specializes in the fabrication of printed circuit boards (PCBs). | ![]() World Mastery Technology World Mastery Technology (威宇科技有限公司) is a manufacturer of printed circuit boards (PCBs). | ![]() Siltronic Siltronic is a company that manufactures hyperpure silicon wafers for the semiconductor industry. | |
Founding Date | Founding Date 1968 | Founding Date 1995 | Founding Date 1968 |
Type | Type Subsidiary | Type Subsidiary | Type Public |
Tags | |||
Locations | Locations Oak Creek, US HQ | Locations Hong Kong, HK HQ | |
Employees | Employees 90 | Employees 600 | Employees 3,82515% decrease |

World Mastery Technology (威宇科技有限公司) is a manufacturer of printed circuit boards (PCBs).
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Siltronic is a company that manufactures hyperpure silicon wafers for the semiconductor industry.
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