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The protocol to upgrade the China-ASEAN Free Trade Area (CAFTA) to Version 3.0 was formally signed in Kuala Lumpur, Malaysia, on October 28, 2025, marking a new stage for a regional economic partnership that has run for more than two decades. The signing ceremony took place on the sidelines of the 28th China-ASEAN Summit, witnessed by Chinese Premier Li Qiang, Malaysian Prime Minister Anwar Ibrahim and other ASEAN leaders, with Chinese Commerce Minister Wang Wentao and Malaysia's Minister of Investment, Trade and Industry Zafrul Aziz signing on behalf of China and ASEAN respectively. Several ASEAN member states, including Thailand, have already completed their domestic approval procedures, and both sides are now working to bring the protocol into force within 2026 — what would be the third systemic upgrade of China-ASEAN economic and trade relations, following the full establishment of CAFTA 1.0 in 2010 and the completion of the 2.0 upgrade in 2015.

China and ASEAN began building their free trade area in 2002, when the two sides signed the Framework Agreement on Comprehensive Economic Co-operation — the first free trade agreement either side had concluded with an external partner. After nearly eight years of tariff reductions and market-opening arrangements, CAFTA 1.0 was fully established in 2010, eliminating tariffs on close to 90 percent of tariff lines and, at the time, forming the world's most populous free trade area. In 2015 the two sides completed the first upgrade, Version 2.0, which expanded commitments in trade in services and investment. As the digital economy has grown rapidly, global supply chains have been reshaped at an accelerating pace, and unilateralism and protectionism have resurfaced, the original rulebook increasingly struggled to keep up with the needs of cross-border business and regional industrial-chain cooperation — prompting the two sides to launch Version 3.0 negotiations aimed at a comprehensive "upgrade in quality."

The Version 3.0 upgrade negotiations were formally launched in November 2022. After nearly two years and nine formal negotiating rounds, their substantial conclusion was announced on October 10, 2024, on the sidelines of the 27th China-ASEAN Summit in Vientiane, Laos. On May 20, 2025, a Special ASEAN-China Economic and Trade Ministers' Meeting was held online, at which trade ministers from both sides jointly announced the full conclusion of the CAFTA 3.0 negotiations, clearing the way for signing later that year. The upgrade protocol was then formally signed in Kuala Lumpur on October 28, 2025. The two sides are now actively pursuing their respective domestic approval procedures, aiming to bring the protocol into force within 2026, with a formal announcement possibly coming at the China-ASEAN Leaders' Meeting scheduled for November this year.

According to the joint statement issued by the two sides, the Version 3.0 upgrade protocol adds rules across nine new areas: the digital economy, the green economy, supply chain connectivity, standards and technical regulations and conformity assessment procedures, sanitary and phytosanitary measures, customs procedures and trade facilitation, competition policy and consumer protection, cooperation on micro, small and medium enterprises, and economic and technical cooperation. Supply chain connectivity is being written into the China-ASEAN free trade framework as a standalone chapter for the first time, with both sides making high-level commitments to facilitate the free flow of key goods and services and agreeing to use digital tools to further improve trade facilitation and strengthen the resilience of regional industrial and supply chains. The digital economy chapter covers emerging issues such as cross-border data flows, e-commerce and digital payments, while the green economy chapter focuses on cooperation in low-carbon transition, renewable energy, and trade in environmental goods and services.

Analysts say the inclusion of a dedicated supply chain connectivity chapter responds to the real-world pressure of recent years, as global industrial chains have been reshaped under geopolitical strain and regional businesses have sought more stable production networks. For Southeast Asia, countries such as Vietnam, Thailand, Indonesia and Malaysia have become important nodes as multinational firms in electronics, automobiles and textiles relocate regional production bases. By unifying rules of origin, simplifying customs clearance and strengthening mutual recognition of standards, CAFTA 3.0 is expected to help these countries integrate more deeply into regional industrial chains in which China remains a central link. In Thailand's case, the Cabinet has already approved submitting the Version 3.0 agreement to parliament for ratification. Thai business circles generally believe that once the agreement takes effect, it will help strengthen Thailand's competitiveness in the digital and low-carbon economies, consolidate the country's position as a regional manufacturing and logistics hub, and create more institutional convenience for China-Thailand industrial-chain cooperation in areas such as electric vehicles, electronic components and processed agricultural products.

On the ratification front, according to information disclosed by China's Ministry of Commerce in August this year, seven ASEAN member states, including Thailand, have already completed their respective domestic approval procedures. Under the agreement's arrangements, once both China and ASEAN have completed all domestic procedures on their respective sides, the protocol will formally take effect 60 days later. Both sides hope to complete the entire entry-into-force process within 2026 and plan to make a formal announcement at the China-ASEAN Leaders' Meeting scheduled for November this year — adding a new milestone to more than three decades of China-ASEAN economic and trade cooperation since the establishment of dialogue relations.

Alongside the negotiation and signing process, trade between China and ASEAN has continued to expand. China's Vice Minister of Commerce Yan Dong said on the eve of the 23rd China-ASEAN Expo that China-ASEAN trade surpassed 1 trillion U.S. dollars for the first time in 2025, reaching 1.05 trillion dollars, up 7.4 percent year on year; in the first seven months of this year, total trade between the two sides reached 744.41 billion dollars, a sharp 24.7 percent year-on-year increase, accounting for 21.8 percent of China's total foreign trade. China has now remained ASEAN's largest trading partner for 17 consecutive years, while ASEAN has been China's largest trading partner for six consecutive years. By the end of July this year, cumulative two-way investment between the two sides and the cumulative turnover of contracted projects by Chinese companies in ASEAN had each surpassed 515 billion dollars.

Industry observers broadly agree that the completion of CAFTA 3.0 represents not only a systemic update of bilateral trade rules but also an important pillar for regional economic integration. Against a backdrop of rising global trade protectionism and accelerating supply chain restructuring, Version 3.0 complements the already-in-force Regional Comprehensive Economic Partnership (RCEP), giving regional businesses a more certain and predictable institutional environment. As the agreement moves toward full entry into force, cooperation between China and ASEAN in emerging areas such as the digital economy, green and low-carbon development, and supply chain collaboration is expected to inject new momentum into sustained regional economic growth — and to create more opportunities for ASEAN countries, including Thailand, to participate in the reshaping of global value chains.