Chinese thermal materials maker SJ Electronics to build US$70 million plant in Penang

SJ Electronics' $70M Penang plant is not a routine capacity play—it is a strategic embedding of Chinese thermal materials capability into the global advanced packaging supply chain. Penang hosts roughly 40% of world OSAT output (ASE, Amkor, SPIL). Building adjacent to the customer compresses TIM and underfill iteration cycles from weeks to days, a decisive edge in chiplet architectures where thermal interface customization is non-negotiable. The deeper signal: US export-control lists on advanced packaging materials keep expanding. Relocating production to Malaysia lets SJ maintain a non-China-origin compliance posture while retaining core formulation IP in-house—the same logic CSMC and Hua Hong applied at the wafer level, now cascading down to the materials tier. Competitively, Shin-Etsu and Henkel will likely accelerate Southeast Asia capacity within 12 months as a hedge. Domestic rivals face a binary: follow to SE Asia or accept margin compression in a consolidating domestic market. Over the next 24 months, Penang will evolve from a pure assembly hub into a materials-process co-innovation node. For the first time, pricing power in thermal management materials—long a Japan-US duopoly—will fragment. The chiplet era is rewriting who sits at the table, and SJ just took a seat.