The Chip in Your Phone Passed Through Here

Your phone has an RF filter in it. Odds are it was tested in Penang.

Here is the full list, and what each name on it actually does.

Inari Amertron — RF & optoelectronics. Back-end assembly and test · Broadcom is ~70% of revenue.

ViTrox — Chip inspection machines. Batu Kawan · founded by Chu Jenn Weng and co-founders, 2000.

Pentamaster — Automated test equipment. Penang · also medical, factory and warehouse automation.

Greatech — Production line automation. Penang · one of Bursa's 'Big Four' ATE makers.

MI Technovation — Semiconductor equipment. The fourth of the Big Four ATE names.

Unisem — Assembly & test (OSAT). Ipoh, Perak · packaging and testing services.

Malaysian Pacific Ind. — Automotive-focused OSAT. Chips for cars — the part of the market that keeps growing.

Kelington Group — Ultra-high purity gas. Builds the gas delivery systems wafer fabs run on.

Frontken — Precision cleaning. Surface treatment for fab equipment · nobody sees it, everyone needs it.

Penang — The cluster itself. Assembly, test, equipment and services in one state.

Every entry above was checked against public reporting before publication. We publish these lists because the individual facts are easy to find but nobody puts them side by side, and the picture only shows up when you do. If we have missed someone who belongs here, tell us and we will add them.