A sanction order from China's Ministry of Commerce has caused South Korea's third largest shipbuilding company to fall into shock, and the global large industrial structure has rippled.

On October 14, 2025, the Ministry of Commerce of China issued an annual Order No. 6, which included five U.S. subsidiaries of the South Korean Sea Corporation on the counter-list.

According to the Anti-Foreign Sanctions Law, from now on, organizations and individuals within our territory will be completely prohibited from carrying out any transactions and cooperation with these companies.

This decision was rapidly triggered by the capital market reaction, according to the data of the Seoul stock exchange is showing that the HUAWEI ocean stock price fell by 5.8 percent on the closing day, the drop in the disk once was more than 10 percent, the company's market value evaporated by 63 billion yuan, approximately $ 4,7 billion.

The sanctions this time are mainly a legitimate response to the 301 investigation initiated by the United States. On October 14, 2025, the United States imposed restrictions on China's shipbuilding industry based on the results of the 301 investigation.

The Chinese Ministry of Commerce has also made it clear that the U.S. behavior seriously damages a legitimate interest of Chinese companies.

Hanwha Marine's U.S. subsidiary actively cooperated and assisted the United States in this process. It submitted materials and provided data to the U.S. Trade Representative Office, and suggested charging a high port fee for China ships.

These moves are defined as assisting and supporting an investigation involving the United States, endangering China¡¯s sovereignty and development interests, thereby triggering a countermeasure by China.

After the release of the sanctions order, the market immediately reacted, and the share price of the Hanoi Ocean declined, and the market value was directly evaporated at 63 billion yuan, which also reflects investor concerns about the prospects of this enterprise.

As a giant in the global shipbuilding industry, Hanwha Marine relies heavily on parts and materials made in China during the construction process.

China¡¯s sanctions are directly impacting their key supply chains, affecting the ability to deliver orders and control costs.

Supply chain experts are analyzing a long-term strategic layout and commercial credibility of the Korean Ocean in global shipping and energy.

The effect of the sanctions is not only limited to the corporate level, but also to a strategic cooperation between South Korea and the United States.

According to the data of the South Korean National Defense Commission in October 2025, the South Korean Defence Administration Chief Jian Jian Jin confirmed in Congress on October 17 that China's sanctions would have a substantial impact on the South American shipbuilding cooperation project "MASGA".

The MASGA project is a shipbuilding cooperation program proposed by the South Korean side to the United States in July 2025 that aims to revive the U.S. shipbuilding industry, and Hunan Ocean is identified as the core participating enterprise in this project.

Xi Jinping said that although the contract has not yet been officially signed, this cooperation project would inevitably be hindered given the problems of shipping equipment in the U.S. shipbuilding in the Hunan Ocean.

Regarding the possible economic losses caused by sanctions, Yu Longyuan, a member of the National Defense Committee of the South Korean National Assembly, quoted estimated data, saying that China's sanctions may cause a loss of up to 60 million dollars to Korean enterprises in the next 1 to 2 years.

The U.S. State Department issued a protest statement on this matter, accusing China of interfering with private enterprises.

Behind this incident, the United States hopes that through cooperation with Hanwha Ocean, it will take advantage of their cost and technology advantages, and its plan to revitalize a shipbuilding industry in China will be affected.

China¡¯s sanctions are accurate and target a weak link in the South Korean Ocean, which is highly dependent on China¡¯s supply chain.

In the global shipbuilding industry competition, China has the advantage of supplying key resources and equipment such as rare earths, which affects the pattern of the global shipbuilding industry to a great extent.

South Korea's shipbuilding industry was originally in fierce competition with China in the global market, after this incident, South Korea's shipbuilding industry in the eyes of global customers will increase compliance risk awareness, which may affect their market share.

China¡¯s sanctions also showed a very accurate effect, targeting only one U.S. subsidiary in the Hunan Ocean, which did not include the entire Hunan Ocean Group on the blacklist.

A precise strike like this will not only bear the consequences of violating the regulations, but will not completely cut off all links between the shipbuilding industry of China and South Korea.

This incident also sends a clear signal to multinational companies around the world: in an environment where geopolitical games intensify, compliant operations have changed from an option to a necessary requirement for survival.

This sanction also shows that in any core strategic industry, enterprises that help the United States contain China will face corresponding economic consequences.

Faced with the restructuring of the global industrial chain, how enterprises balance risks and opportunities in a complex environment, this has also become an important issue for future development.

So do you think this sanction can provide a warning to other companies? Feel free to share your views in the comment area.

Data source of this article:

Official Statement of the Ministry of Commerce of China (October 2025)

Official data on the Seoul Stock Exchange (October 2025)

Record of Congressional Defense Committee Meeting (October 2025)

Yu Longyuan, a member of the National Defense Committee of the South Korean National Assembly, made a public statement (October 2025)