You are using an outdated browser and your browsing experience will not be optimal. Please update to the latest version of Microsoft Edge, Google Chrome or Mozilla Firefox. Install Microsoft Edge

May 4, 2012

Anti-Dumping Measures: Easing the Transition to Free Trade

Bangkok Post, Corporate Counsellor Column

Many businesses in ASEAN countries continue to adjust to the changes brought about by the elimination of import duties, in the context of both the ASEAN Economic Community and other bilateral and multilateral free trade agreements. While reductions in barriers to trade—tariff or non-tariff—can open foreign markets to domestic producers, they also bring additional competition for domestic producers in their home markets.

In a world without barriers to trade, the idea is that each country would produce those goods in which it has a comparative advantage. While the economic efficiency this brings benefits everyone in the long term, the transitions are not always smooth. To address problems caused by dumping, countries can assess anti-dumping duties, subject to certain regulations.

Though there are some regional and country-specific differences, anti-dumping regimes are quite standardized across borders. This is largely because the Anti-Dumping Agreement of the World Trade Organization governs application of anti-dumping measures by WTO member countries. In Thailand, the relevant law is the Anti-Dumping and Subsidized Imports Act B.E. 2542 (1999), which replaced what had previously been contained in regulatory notifications issued by the Ministry of Commerce, dating as early as 1991.

Simply put, a product is “dumped” when it is exported to another country for sale at a price below the normal value of that product, or a like product, in the exporting country. However, for dumping to be actionable, it is also necessary to prove that there was injury to domestic industry in the country to which the dumped goods were exported, and that such injury was caused by the dumping. It can be challenging to prove all three elements.

Dumping, Injury, and Causation

For a country’s regulator to determine whether dumping is occurring, the export price of the allegedly dumped goods must be compared to their normal value. The WTO agreement provides three options, the most preferred one being to determine normal value on the basis of the exporter’s price in the exporter’s home market. There is also some allowance to use similar goods if the exact good is not sold in the home market.

However, in some cases, the product of interest might not be sold in sufficient quantities in the exporter’s domestic market, making this method unviable. In this case, pricing in a third country’s market can be used. If that is not viable, the third option is to determine normal value by the constructed value method, which can be used for investigations of exports from countries that are not market economies.

In making the comparison between export price and normal value, there are many prescribed adjustments to make the comparison more indicative of real differences; these include, for example, those to account for product differences and level of trade.

The next element is injury to domestic industry. This can consist of present injury, threat of injury, or retardation in the establishment of domestic industry.

Finally, the last element is causation. The purpose here is to determine whether the dumping actually caused the injury, or whether it was caused by some other factor.

Investigations

To initiate an anti-dumping investigation, a request would be made by domestic industry to the relevant domestic regulator (in Thailand, the Department of Foreign Trade at the Ministry of Commerce). For the request to be valid, at least 25% of the domestic industry must be represented, and opposition must be less than 25% of the domestic market. Often, a single producer has sufficient production to have standing to request the investigation independently. Otherwise, multiple producers within an industry would jointly request the investigation.

In applying for an investigation, domestic producers seek to build a prima facie case of dumping, injury, and causation, to make it more likely that the action will proceed. Assuming the investigation proceeds, accused foreign producers are asked to complete questionnaires about their pricing, costs, and related matters.

On the basis of these questionnaires, a preliminary determination is made (to which responses can also be filed), and eventually a public hearing is held, at which testimony can be given. Investigations are to be completed within one year, but this deadline can be extended by six months. There are mechanisms for provisional measures when warranted, and also to impose measures retrospectively.

If, at any point during an investigation, the authorities determine that dumping is zero or negligible, the investigation must immediately cease. Assuming the investigation reveals that dumping is occurring, that domestic industry is injured, and that the dumping has caused the injury, the authorities issue an order setting anti-dumping rates, which can be in effect for up to five years. After this period they must expire, unless an interim review indicates that ending the measures would injure domestic industry.

While foreign producers are not compelled to respond to an anti-dumping investigation, a failure to respond can allow the authorities to determine the exporter’s dumping margin on the basis of the best information available. As such, a failure to participate can ultimately result in a higher anti-dumping rate.

In petitioning for an anti-dumping investigation, it is necessary to use strategy to make the best case. Likewise, when responding to an investigation, it is important to use strategy to present the best case that one is not dumping, or to minimize the apparent margins. Whether one is a petitioner or a respondent, anti-dumping investigations are considerable work, but the results can make a big difference in profits, and even business survival.

RELATED INSIGHTS​ 

September 15, 2026
The Myanmar Investment Commission (MIC) has issued a notification that gives investors with projects in Myanmar clearer guidance for securing approval and for changing, expanding, or exiting an approved project. Issued on August 19, 2026, MIC Notification No. 5/2026 replaces MIC Notification No. 26/2021 and sets procedures for state or regional investment committees to review, approve, and supervise investment projects, including project amendments, investment increases, land-use rights applications, compliance inspections, and suspension or termination of approved businesses. Endorsement Application Timeline and Deemed Acceptance In Myanmar, prospective investors seeking approval under the Myanmar Investment Law generally do so through an MIC permit or an MIC endorsement, depending on the nature of the investment. While certain large-scale investment projects require an MIC permit, projects that are not required to obtain an MIC permit may instead apply for an MIC endorsement. Investors seeking MIC endorsement for their planned projects typically submit their applications to the relevant state or regional investment committee. These committees are established under the Myanmar Investment Law and are authorized to approve investments of less than USD 5 million, subject to the project’s nature and location. MIC Notification No. 5/2026 specifies that upon receiving an endorsement application, the relevant investment committee office will check it for completeness and determine whether it can be considered at the state or regional level or must be referred to the MIC; if it must be forwarded to the MIC, this will be done within 10 working days. If an application is within its purview, the committee may reject the endorsement application within 15 working days of receipt; otherwise, the application is deemed accepted. If approved, the endorsement certificate will be issued within 10 working days of the approval decision, subject to applicable procedures. Endorsement Certificate Amendment The notification clarifies which amendments a state
September 14, 2026
On August 23, 2026, Vietnam’s National Assembly passed Law No. 11/2026/QH16, amending the country’s Customs Law with effect from March 1, 2027. The amendments represent a substantial reform of Vietnam’s customs-based intellectual property enforcement regime. The reforms come amid considerable external pressure. In its 2026 Special 301 review, the US Trade Representative (USTR) designated Vietnam a “priority foreign country,” citing widespread counterfeiting, weak border enforcement, limited ex officio customs powers, and the absence of controls over goods in transit. Vietnam’s legislative response signals a commitment to bringing its border enforcement practices into line with international expectations. For IP rights holders operating in or through Vietnam, the amended law introduces several tools that substantially strengthen enforcement options at the border. Closing the Transit Gap One of the most consequential amendments is the extension of IP-related customs enforcement to goods in transit. Previously, Vietnam’s customs regime applied IP controls only to goods being imported or exported, a gap the USTR had specifically identified as enabling infringing goods to pass through Vietnamese ports with impunity. Vietnam’s geographic position as a logistics hub for Southeast Asia means that substantial volumes of goods transit its ports and free-trade zones. Extending enforcement to cover these shipments brings Vietnam closer to the standard set by the EU’s customs enforcement regulation and addresses a longstanding concern of multinational brand owners whose goods are frequently counterfeited in the region. Strengthened Suspension and Ex Officio Powers The amended law introduces a dual-track suspension mechanism (Article 73(2)). Customs authorities will suspend clearance upon request by an IP rights holder (or authorized representative) who provides evidence of IP ownership, evidence of infringement, and a financial guarantee. Customs can now proactively suspend clearance on an ex officio basis if, during inspection and monitoring, they discover “clear grounds” to suspect that imported, exported,
September 9, 2026
Certain securities, derivatives, and treasury activities in Thailand were opened to foreign investors when Thailand’s Ministry of Commerce published two new ministerial regulations in the Government Gazette on August 28, 2026. The regulations significantly broaden the service activities that foreign-owned businesses may conduct without a license or certificate under the Foreign Business Act B.E. 2542, as amended (FBA). Securities and Derivatives Business Exemptions Prior to the issuance of these ministerial regulations, the exemptions covered (1) securities brokerage and derivatives brokerage with their only underlying assets being agricultural commodities, financial instruments, and securities; and (2) dealers, advisers, and fund managers conducting derivatives business under Thailand’s derivatives laws. The ministerial regulations provide broader exemptions. In addition to derivatives under the laws on derivatives as before, the following two major categories are provided: Derivatives whose underlying assets or variables fall outside the scope of Thailand’s laws on derivatives. This addresses a gap in the previous framework, which did not comprehensively exempt derivatives tied to nonregulated underlying assets or variables, such as certain commodities. Foreign brokers, advisors, and fund managers can now facilitate a broader range of hedging and risk management instruments without triggering FBA licensing requirements. Derivatives traded outside a derivatives exchange, or over the counter (OTC), whose payments are calculated by reference to foreign exchange rates or interest rates. This removes an FBA licensing barrier for foreign providers of widely used OTC hedging products, broadening the solutions available to importers and exporters managing currency exposure and to borrowers seeking greater certainty over financing costs. The ministerial regulations also exempt brokers and agents handling transactions involving either of these two derivatives categories. For securities businesses, the ministerial regulations add exemptions for margin loans used to purchase securities and for securities repurchase transactions. These additions clarify whether such activities qualify as exempt brokerage
September 4, 2026
Foreign business restrictions on telecommunications, treasury center businesses, and intragroup support services were eased when Thailand published the Ministerial Regulation Prescribing Service Businesses Not Requiring Permission for Foreign Business Operations (No. 5) B.E. 2569 (2026) in the Government Gazette on August 28, 2026. The ministerial regulation expands the categories of service businesses that foreign investors may operate without a foreign business license (FBL) under the Foreign Business Act B.E. 2542 (1999) (FBA). Of particular relevance to the telecommunications, fintech, and technology sectors, the ministerial regulation exempts: Type 1 telecommunications licensees, which do not have their own networks; Treasury center businesses operated in accordance with Thailand’s exchange control regulations; and Certain intragroup administrative, human resources, and information technology management services. Telecommunications Services Foreign-owned businesses providing telecommunications services under a type 1 telecommunications license may now operate without obtaining an FBL. This may streamline market entry for qualifying telecommunications and digital infrastructure businesses. The exemption applies only to the FBA licensing requirement. Operators must continue to comply with applicable requirements under the Telecommunications Business Act and the regulations of the National Broadcasting and Telecommunications Commission, and the change does not affect foreign ownership restrictions applicable to type 2 or type 3 telecommunications businesses. Treasury Center Businesses The ministerial regulation also exempts qualifying treasury center businesses from the FBL requirement. This may facilitate centralized treasury functions in Thailand, including liquidity management, foreign exchange management, and intragroup funding arrangements. Treasury center operations remain subject to applicable requirements of the Bank of Thailand and other competent authorities. Intragroup Administrative, HR, and IT Services Certain administrative, human resources, and information technology management services provided between affiliated entities are also exempt, provided the relevant entities satisfy prescribed ownership or management criteria. The exemption is available where the service provider and recipient are related through specified ownership