Navigating U.S. Yield Surges & Active Tariff Shifts in Asian Supply Chains

Recently, U.S. long-term Treasury yields have continued to run at elevated levels. On September 1, the 10-year Treasury yield hit an intraday high of 4.796%, the highest since January 2025; as of September 3, the 30-year Treasury yield closed near 5.25%. According to the latest fiscal monitors, total U.S. federal debt has surpassed $40 trillion, with annual interest payments estimated to exceed $1.38 trillion. As of September 7, 2026, markets have begun to  closely monitor whether the 10-year yield's sustained hold above the 4.8% threshold , a key psychological level , could trigger broader market ripple effects. Some institutions project that should the Federal Reserve resume rate hikes in September, the 10-year and 30-year yields could move toward 5.0% and 5.5%, respectively, suggesting that upward rate pressure remains unresolved.

These developments are not only a matter of U.S. fiscal health but are also transmitting ripple effects to U.S. companies operating and sourcing in Asia through multiple channels. In this newsletter, the CCA-IM team examines the impact mechanisms and response strategies across three dimensions: supply chain risks, foreign exchange and cost dynamics, and regional footprint realignment.

I. Supply Chain Risks: Dense Tariff Policy Adjustments and Supplier Stability Under Test

High U.S. Treasury yields are closely tied to the widening U.S. fiscal deficit. In the first ten months of fiscal year 2026, the U.S. federal deficit reached a record $1.8 trillion. Against this backdrop, U.S. trade policy has undergone a series of dense adjustments over the past year:

• February–March 2025: Citing fentanyl-related concerns, the U.S. imposed additional tariffs of 10% and 20% on Chinese goods in two successive rounds.

• February 2026: After the Supreme Court struck down the IEEPA tariffs as unlawful, the U.S. invoked Section 122 of the Trade Act of 1974 to impose a 10% temporary balance-of-payments surcharge.

• July 24, 2026: Following the 150-day statutory expiration of the Section 122 surcharge, the USTR imposed a 12.5% tariff on goods from mainland China under Section 301, based on the results of the Section 301 investigation.

Of particular note for U.S. companies is that Vietnam has also been included in this 12.5% Section 301 tariff tier, covering approximately 37% of its exports to the U.S. While electronics and high-tech products have been granted exemptions, industries such as textiles, apparel, and wood products are facing increased pressure — meaning the room to circumvent tariffs by "routing through Southeast Asia" is narrowing.

However, the impact shows significant industry divergence: the core manufacturing activities that U.S. companies have relocated to Vietnam in recent years are precisely in the electronics and high-tech segments that are now exempt. For these industries, therefore, Vietnam's supply chain restructuring dividend remains substantial. Companies should conduct assessments specific to their sub-sectors rather than take a one-size-fits-all approach.

At the same time, the high-interest-rate environment pushes up end-user financing costs, dampening U.S. consumer demand; rising dollar funding costs are also putting financial pressure on Asian export-oriented suppliers that rely on trade credit.

II. Exchange Rates and Cross-Border Costs: Risks and Opportunities in RMB Volatility

Elevated U.S. Treasury yields have kept dollar funding costs high, while China's 10-year government bond yield remains relatively low. The resulting U.S.-China yield spread has widened, putting downward pressure on the RMB and contributing to capital outflows from many Asian economies. In early September, the central parity rate of the RMB against the U.S. dollar stood around 6.78 — a level that currently offers dollar-holding U.S. buyers a distinct tactical advantage. However, this window should be treated as tactical rather than structural. The IMF's July 2026 External Sector Report assessed the RMB's real effective exchange rate as undervalued, with a midpoint estimate of the undervaluation gap at approximately 21.3%, and major financial institutions have pointed to medium-term appreciation risks. That said, the PBOC has historically prioritized stability over rapid adjustment, and China's managed floating exchange rate regime and its active use of macroprudential tools mean that any adjustment is likely to be gradual and heavily smoothed, rather than a rapid or linear trend. Given this mix of near-term pressure and medium-term uncertainty, companies should monitor exchange rate dynamics closely and maintain active, real-time dialogue with suppliers on pricing expectations. Rather than relying on a single hedging instrument, procurement teams should treat currency risk as an ongoing agenda item — one that requires frequent recalibration as market conditions and policy signals evolve.

III. Supply Chain Restructuring: From "China Plus One" to Regional Realignment

Over the past two decades, a distinctive economic circulation model took shape between China and the U.S. — China accumulated trade surpluses through exports to the U.S. and then recycled them into U.S. Treasury holdings. This model is now being disrupted. As of June 2026, China's U.S. Treasury holdings had fallen to $633.4 billion, the lowest level since September 2008, down by more than half from its peak of approximately $1.32 trillion.

Against this backdrop, multinational corporations are accelerating the regionalization of their supply chains, gradually forming a "China–Southeast Asia–U.S." new triangular trade flow pattern:

• Upstream: Raw materials and core components are still primarily sourced from China.

• Midstream: Assembly and processing stages are shifting to Vietnam, Thailand, Malaysia, and other Southeast Asian countries.

• Downstream: Finished goods are ultimately destined for the U.S. market.

Consequently, intra-regional linkages within Asian supply chains have further strengthened. Intra-regional trade among Asian economies now accounts for a growing share of total trade, partially offsetting supply chain disruption risks arising from demand volatility in the U.S. market. China, for its part, continues to advance its upgrade toward higher-value-added segments of the industrial chain, further reinforcing its role as a core hub in Asian supply chains.

Summary and Key Recommendations

The impact of high U.S. Treasury yields on Asian supply chains is transmitted through multiple interwoven channels — tariff policy, exchange rate fluctuations, supplier stability, and regional supply chain restructuring. For U.S. companies operating and sourcing in Asia, we recommend focusing on the following priority areas:

• Supplier Risk Screening: Conduct financial and operational health assessments of existing Asian suppliers to identify risk points in advance, with particular attention to suppliers' dollar funding dependency and overall financial stability.

• Procurement Diversification Strategy: Evaluate regional supply chain realignment options to diversify geopolitical and tariff risks, while also taking into account the impact of Vietnam's new Section 301 tariff policy — electronics and high-tech industries benefit from exemptions, while traditional manufacturing sectors should proceed with more careful assessment.

• Contractual Term Optimization: Consider incorporating exchange rate adjustment mechanisms and trade policy contingency clauses in supply contracts, while monitoring favorable windows amid two-way exchange rate movements.

• Tariff Impact Assessment: Map out tariff cost changes across all links of your supply chain and evaluate the impact of the Section 301 tariff alternative policy on costs and competitiveness. It should be noted that Section 301 tariffs are a long-term tariff measure with no fixed expiration date, distinct in nature from the 150-day temporary Section 122 tariff.

CCA-IM has, since 2003, assisted more than 300 North American companies and over 40 private equity funds in completing more than 500 projects in China and Asia. Our dual-location team in both the U.S. and China, supported by our Vietnam office, can provide you with full-chain support — from strategic assessment to on-the-ground execution.

For a tailored discussion to your specific business scenarios, reach out to Jayson Cronin at jcronin@cca-im.com.