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The View | Fallout of US-China chip war could be global overcapacity across industries

  • China’s pursuit of semiconductor self-sufficiency risks leading to overcapacity and price wars
  • The current experience may motivate China to look into its other vulnerabilities and develop domestic substitutes, spreading overcapacity across many industries

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A staff member examines a semiconductor wafer at HT-Tech in Nanjing on March 9. Photo: Xinhua

Chinese companies have come to appreciate the risk of losing access to key equipment or components. Their responses, sometimes with financial assistance from local governments, are leading to a wave of import substitution.

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While precision and complexity make some equipment difficult to replicate in the short term, a decade could be enough for China to be self-sufficient in some key technologies. The replication of global tech supply chains within China will lead to overcapacity and price wars.

The United States is imposing restrictions on Chinese companies’ access to key technologies, such as equipment needed to manufacture advanced semiconductor chips and the related software. This is having a significant impact on some markets. For example, Huawei, which briefly overtook Samsung in terms of smartphone shipments in early 2020, has struggled after US sanctions cut off its access to semiconductors developed or produced using American technology.

Global sales of mobile phones, tablets, personal computers and printers were worth about US$700 billion last year. These products need the latest chips and are mostly made in China. Foreign companies, such as Apple, that have factories in China are largely not affected. Many Chinese companies, perhaps because the US considers them tech users rather than creators, are not subject to restrictions. They keep making consumer tech products for export or the domestic market.

The impact of the chip war has been limited so far. Of course, it could get worse. If the US expands the policy to all China-based production, the effects would be significant.
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The importance of latest-generation chips is being exaggerated. Mature technology like 28 nanometre chips or above are still very much in demand. Products that have moved to new chips could move back. The global economy was working fine a decade ago without the latest chips. Being cut off from 7nm chips would not be the end of the world.
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