What's Happening?
Japanese chemical manufacturer Ajinomoto has reportedly informed its customers in mainland China of a 30% reduction in the supply of ABF (Ajinomoto Build-up Film), a critical insulating film used in nearly all high-end processor packages. This information
comes from a report by the Chinese outlet JW Insights, citing unnamed supply chain sources. If confirmed, this cut would significantly impact Chinese customers such as Shennan Circuits, Xingsen Technology, and Shenghong Electronics, who heavily rely on Ajinomoto's dominant global market share of approximately 95% for this film. China's self-sufficiency rate for ABF is estimated to be below 5%. The alleged reason for this reduction is Ajinomoto's prioritization of Japanese and core overseas accounts, which supply the FC-BGA substrates for accelerators from companies like Nvidia, AMD, and Intel.
Why It's Important?
This reported supply cut has significant implications for the global semiconductor industry, particularly for China's efforts to achieve technological independence. ABF is an essential component for advanced chip packaging, and a substantial reduction in its supply could hinder the production of high-end processors in China. This situation underscores the vulnerability of global supply chains to single-source dependencies and geopolitical tensions. For U.S. companies and their allies, this could potentially strengthen their position in the advanced chip market by limiting China's access to critical materials. However, it also highlights the broader risks of supply chain disruptions that could affect the availability and cost of electronic components worldwide. The incident could accelerate China's efforts to develop domestic substitutes for ABF, potentially leading to new innovations and competitive dynamics in the long term.
What's Next?
Chinese companies are actively pursuing domestic alternatives to ABF, with several films like Huazheng New Material's CBF, Shenzhen Newface's NBF, and Hongchang Electronics' GBF in various stages of qualification and trial production. Huazheng's CBF is reportedly the most mature, with mass-production yields above 85% and validation underway at key Chinese manufacturers. However, the challenge remains in the lengthy downstream reliability qualification process, which can take one to three years. The reported cut could intensify these efforts and accelerate the adoption of domestic films once they meet stringent reliability standards. Additionally, China is exploring longer-term solutions like glass substrates, with companies like BOE and Lens Technology investing in this technology. The situation is likely to prompt further strategic moves from both Chinese and international players to secure their supply chains and reduce dependencies.
Beyond the Headlines
This development extends beyond a simple supply chain disruption, touching upon the broader geopolitical competition in advanced technology. The alleged ABF cut, following China's rare earth export curbs to Japan, suggests a tit-for-tat dynamic in critical material control. While Ajinomoto attributes the cut to capacity allocation driven by AI demand, the retaliatory optics are evident. This highlights the increasing weaponization of supply chains in international relations, where control over essential components becomes a tool for strategic leverage. The long-term implication is a potential fragmentation of the global technology supply chain, with nations striving for greater self-sufficiency in critical areas. This could lead to higher costs, slower innovation, and a more complex global trade environment, as countries prioritize national security and technological independence over pure economic efficiency.
