US government disclosures have cast rare light on one of the electric vehicle (EV) industry’s most closely guarded supply chains, confirming that LG Energy Solutions (LGES) signed a battery supply agreement worth about US$4 billion with Tesla in July 2025.

With silicon photonics (SiPh) demand surging, MA-tek chairwoman Yong-Fen Hsieh announced the company has secured major orders from the world’s three largest customers, driving revenue contributions. Following the booming AI chip market, SiPh and co-packaged optics (CPO) are set to become the next strong growth engines. Although the SiPh boom still requires time to mature, MA-tek expects its testing business revenue to double over the next three years, with overall operations targeting double-digit growth in 2026.

Samsung Electronics is reportedly set to exclusively supply sixth-generation high-bandwidth memory (HBM4) to OpenAI while reallocating more than half of its advanced foundry capacity to internal production, according to Hankyung and industry sources. The move underscores the South Korean chipmaker’s drive to meet surging demand for artificial intelligence (AI) components as orders from major customers — including Nvidia and Advanced Micro Devices (AMD) — continue to accelerate.