Sierra Circuits Sierra Circuits (also known as Sierra Proto Express) is a company that manufactures and assembles printed circuit boards. | ![]() Advantest Advantest (株式会社アドバンテスト) is a company that designs, manufactures, and sells semiconductor testing equipment. | ![]() United Microelectronics United Microelectronics Corporation (UMC, 聯華電子股份有限公司) is a semiconductor foundry company that provides integrated circuit (IC) fabrication services. | |
Founding Date | Founding Date 1986 | Founding Date 1954 | Founding Date 1980 |
Type | Type Private | Type Public | Type Public |
Tags | |||
Locations | Locations Sunnyvale, US HQ Delta, CA | Locations Hsinchu, TW HQ Yokohama, JP Seoul, KR Amsterdam, NL Singapore, SG Sunnyvale, US | |
Employees | Employees 478 | Employees 7,0013% increase | Employees 19,0164% decrease |
Financial | |||
Revenue (est.) | Revenue (est.) $108m (Y, 2024) | Revenue (est.) ¥1.1t (FY, 2026) | Revenue (est.) NT$237.6b (FY, 2025) |
Cost of goods | Cost of goods N/A | Cost of goods ¥376.9b (FY, 2026) | Cost of goods NT$109.5b (FY, 2025) |
Gross profit | Gross profit N/A | Gross profit ¥755.3b (FY, 2026) | Gross profit NT$130.5b (FY, 2025) |
Net income | Net income N/A | Net income ¥375.4b (FY, 2026) | Net income NT$41.5b (FY, 2025) |

Advantest (株式会社アドバンテスト) is a company that designs, manufactures, and sells semiconductor testing equipment.
View company
United Microelectronics Corporation (UMC, 聯華電子股份有限公司) is a semiconductor foundry company that provides integrated circuit (IC) fabrication services.
View company