Physicochemical Properties

Dichlorosilane is a colorless, flammable and toxic gas under normal temperature and pressure, with a peculiar odor. It is soluble in organic solvents such as benzene and ether, and its purity is above 99%.

Main Uses

Dichlorosilane is mainly used for thin film deposition in the chip manufacturing process (e.g., epitaxial films, silicon carbide films, silicon nitride films, silicon oxide films and polysilicon films). It is applied in the production of logic chips, memory chips, analog chips and other types of chips, and also used in the synthesis of silicon-based series precursors and polysilazanes.

This product is classified under HS Code 28539090 of the Customs Tariff of the People's Republic of China. Other products under this HS Code are not within the scope of this investigation.

III. Registration for Participation in the Investigation

Interested parties shall register with the Bureau of Trade Remedy Investigation of the Ministry of Commerce for participation in this anti-dumping investigation within 20 days from the date of issuance of this Announcement. Interested parties participating in the investigation shall submit explanatory materials such as basic identity information, volume and value of the investigated product exported to or imported from China, volume and value of like products produced and sold, and affiliation information in accordance with the Reference Format for Registration for Participation in the Investigation, which can be downloaded from the sub-website of the Bureau of Trade Remedy Investigation on the Ministry of Commerce's official website.

Interested parties registering for this anti-dumping investigation shall submit an electronic version via the Trade Remedy Investigation Information Platform (https://etrb.mofcom.gov.cn), and a written version as required by the Ministry of Commerce simultaneously. The electronic and written versions shall be identical in content and consistent in format.

For the purpose of this Announcement, interested parties refer to individuals and organizations as stipulated in Article 19 of the Regulations of the People's Republic of China on Anti-Dumping.

IV. Access to Public Information

Interested parties may download the non-confidential text of the application submitted by the applicant for this case from the sub-website of the Bureau of Trade Remedy Investigation on the Ministry of Commerce's official website, or inspect, read, transcribe and copy it at the Trade Remedy Public Information Reading Room of the Ministry of Commerce (Tel: 0086-10-65197878). During the investigation, interested parties may query public information on the case via the relevant website, or inspect, read, transcribe and copy such information at the aforesaid Reading Room.

V. Comments on Case Initiation

If interested parties wish to comment on the product scope, applicant qualification, investigated countries and other relevant issues of this investigation, they may submit written opinions to the Bureau of Trade Remedy Investigation of the Ministry of Commerce within 20 days from the date of issuance of this Announcement.

VI. Investigation Methods

In accordance with Article 20 of the Regulations of the People's Republic of China on Anti-Dumping, the Ministry of Commerce may collect information and conduct investigations from relevant interested parties by means of questionnaires, sampling, hearings, on-site verification and other methods.

To obtain the information required for this investigation, the Ministry of Commerce will generally issue questionnaires to interested parties within 10 working days from the deadline for registration for participation in the investigation as stipulated in this Announcement. Questionnaires can be downloaded from the sub-website of the Bureau of Trade Remedy Investigation on the Ministry of Commerce's official website.

The Questionnaire for Foreign Exporters or Producers in the Anti-Dumping Investigation of Dichlorosilane covers information such as corporate structure and operation, the investigated product, export sales to China, domestic sales, operational and financial information, production costs and related expenses, estimated dumping margin and checklists. The Questionnaire for Domestic Producers in the Anti-Dumping Investigation of Dichlorosilane includes basic corporate information, domestic like product information, operational information, financial information and other issues requiring explanation. The Questionnaire for Domestic Importers in the Anti-Dumping Investigation of Dichlorosilane covers basic corporate information and trade information on the investigated product.

Interested parties shall submit complete and accurate responses within the specified time, which shall include all information required by the questionnaires.

VII. Submission and Handling of Information

Interested parties shall submit electronic versions of comments, questionnaire responses and other materials during the investigation via the Trade Remedy Investigation Information Platform (https://etrb.mofcom.gov.cn), and a written version as required by the Ministry of Commerce simultaneously. The electronic and written versions shall be identical in content and consistent in format.

If interested parties request confidentiality for the information submitted to the Ministry of Commerce, they may file a request for confidential treatment of the relevant information with the Ministry of Commerce and state the reasons. If the Ministry of Commerce approves the request, the interested party applying for confidentiality shall simultaneously provide a non-confidential summary of the confidential information. The non-confidential summary shall contain sufficient meaningful information to enable other interested parties to form a reasonable understanding of the confidential information. If a non-confidential summary cannot be provided, the reasons shall be stated. Information submitted by interested parties without a confidentiality request shall be deemed public information by the Ministry of Commerce.

VIII. Consequences of Non-Cooperation

In accordance with Article 21 of the Regulations of the People's Republic of China on Anti-Dumping, during the investigation, interested parties shall truthfully reflect the situation and provide relevant materials. If an interested party fails to truthfully reflect the situation, provide relevant materials, fails to provide necessary information within a reasonable time, or seriously hinders the investigation in other ways, the Ministry of Commerce may make a ruling based on the facts already obtained and the best information available.

IX. Investigation Period

This investigation commences on January 7, 2026, and shall generally be completed by January 7, 2027. Under special circumstances, the period may be extended by 6 months.