CSMS 5168408·Trade policy·June 17, 2025·View on csms.cbp.gov ↗

Antidumping duty order on certain alkyl phosphate esters from the People's Republic of China (A-570-168)

Plain-English explanation

CSMS 5168408 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (trade policy), published on June 17, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "Antidumping duty order on certain alkyl phosphate esters from the People's Republic of China (A-570-168)". It links to 1 AD/CVD case in Tandom's catalog. CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Linked AD/CVD cases(1)

Cases referenced or affected by this CSMS message

A-570-168

Message body

Full text as published by U.S. Customs and Border Protection

1. On 06/11/2025 Commerce published in the Federal Register its antidumping duty order on certain alkyl phosphate esters from the People's Republic of China (China) (90 FR 24579). 2. The merchandise covered by the scope of this order are alkyl phosphate esters, which are halogenated and non-halogenated phosphorus-based esters with a phosphorus content of at least 6.5 percent (per weight) and a viscosity between 1 and 2000 mPa.s (at 20-25 °C). Merchandise subject to this order primarily includes Tris (2-chloroisopropyl) phosphate (TCPP), Tris(1,3-dichloroisopropyl) phosphate (TDCP), and Triethyl Phosphate (TEP). TCPP is also known as Tris (1-chloro-2-propyl) phosphate, Tris (1-chloropropan-2-yl) phosphate, Tris (monochloroisopropyl) phosphate (TMCP), and Tris (2-chloroisopropyl) phosphate (TCIP). TCPP has the chemical formula C9H18Cl3O4P and the Chemical Abstracts Service (CAS) Nos. 1244733-77-4 and 13674-84-5. It may also be identified as CAS No. 6145-73-9. TDCP is also known as Tris (1,3-dichloroisopropyl) phosphate, Tris (1,3-dichloro-2-propyl) phosphate, Chlorinated tris, tris {2- chloro-1-(chloromethyl ethyl)} phosphate, TDCPP, and TDCIPP. TDCP has the chemical formula C9H15Cl6O4P and the CAS No. 13674-87-8. TEP is also known as Phosphoric acid triethyl ester, phosphoric ester, flame retardant TEP, Tris(ethyl) phosphate, Triethoxyphosphine oxide, and Ethyl phosphate (neutral). TEP has the chemical formula (C2H5O)3PO and the CAS No. 78-40-0. Imported alkyl phosphate esters are not excluded from the scope of this order even if the imported alkyl phosphate ester consists of a single isomer or combination of isomers in proportions different from the isomers ordinarily provided in the market. Also included in this investigation are blends including one or more alkyl phosphate esters, with or without other substances, where the alkyl phosphate esters account for 20 percent or more of the blend by weight. Alkyl phosphate esters are classified under subheading 2919.90.5050, Harmonized Tariff Schedule of the United States (HTSUS). Imports may also be classified under subheadings 2919.90.5010 and 3824.99.5000, HTSUS. The HTSUS subheadings and CAS registry numbers are provided for convenience and customs purposes. The written description of the scope is dispositive. 3. For imports of certain alkyl phosphate esters from China, CBP shall suspend liquidation of entries of subject merchandise entered, or withdrawn from warehouse, for consumption on or after 06/06/2025 (date of publication of the International Trade Commission final determination in the Federal Register). Effective 06/06/2025, CBP shall require a cash deposit equal to the percentages identified below. These cash deposit rates have been adjusted to reflect the appropriate subsidy offsets determined in the companion countervailing duty proceeding. Exporter: China-Wide Entity Case number: A-570-168-000 Cash deposit rate: 243.09% Exporter: Zhejiang Wansheng Co., Ltd. Producer: Zhejiang Wansheng Co., Ltd. Case number: A-570-168-001 Cash deposit rate: 126.45% Exporter: Anhui RunYue Technology Co., Ltd. Producer: Anhui RunYue Technology Co., Ltd. Case number: A-570-168-002 Cash deposit rate: 167.46% Exporter: ACETO (SHANGHAI) LTD. Producer: Xinji Hongzheng Chemical Co., Ltd. Case number: A-570-168-004 Cash deposit rate: 135.28% Exporter: Anhui Shengli Import And Export Co., Ltd. Producer: Anhui Shengli Pesticide & Chemistry Co., Ltd. Case number: A-570-168-005 Cash deposit rate: 135.28% Exporter: Anhui Shengli Import And Export Co., Ltd. Producer: Ningguo Long Day Chemical Co., Ltd. Case number: A-570-168-006 Cash deposit rate: 135.28% Exporter: Fujian Wynca Technology Co., Ltd. Producer: Fujian Wynca Technology Co., Ltd. Case number: A-570-168-007 Cash deposit rate: 135.28% Exporter: Fujian Wynca Technology Co., Ltd. Producer: Anhui RunYue Technology Co., Ltd. Case number: A-570-168-008 Cash deposit rate: 135.28% Exporter: Fujian Wynca Technology Co., Ltd. Producer: Shandong Yarong Chemical Co., Ltd. Case number: A-570-168-009 Cash deposit rate: 135.28% Exporter: Shandong Yarong Chemical Co., Ltd. Producer: Shandong Yarong Chemical Co., Ltd. Case number: A-570-168-010 Cash deposit rate: 135.28% Exporter: Shanghai Iroyal Chemical Co., Ltd. Producer: Futong Chemical Co., Ltd. Case number: A-570-168-011 Cash deposit rate: 135.28% Exporter: Shanghai Iroyal Chemical Co., Ltd. Producer: Fujian Wynca Technology Co., Ltd. Case number: A-570-168-012 Cash deposit rate: 135.28% Exporter: Shanghai Iroyal Chemical Co., Ltd. Producer: Zhejian Hong Hao Technology Co., Ltd. Case number: A-570-168-013 Cash deposit rate: 135.28% Exporter: Shanghai Iroyal Chemical Co., Ltd. Producer: Shandong Yarong Chemical Co., Ltd. Case number: A-570-168-014 Cash deposit rate: 135.28% Exporter: Shanghai Iroyal Chemical Co., Ltd. Producer: Xuancheng City Trooyawn Refined Chemical Industry Co., Ltd. Case number: A-570-168-015 Cash deposit rate: 135.28% Exporter: Shanghai Yongxiangshun International Trade Co., Ltd. Producer: Hebei Zhenxing Chemical and Rubber Co., Ltd. Case number: A-570-168-016 Cash deposit rate: 135.28% Exporter: Xuancheng City Trooyawn Refined Chemical Industry Co., Ltd. Producer: Xuancheng City Trooyawn Refined Chemical Industry Co., Ltd. Case number: A-570-168-017 Cash deposit rate: 135.28% Exporter: Yoke Chemicals and New Materials (Shanghai) Co. Ltd. Producer: Jiangsu Yoke Technology Co., Ltd. Case number: A-570-168-018 Cash deposit rate: 135.28% Exporter: Zhangjiagnag Fortune Chemical Co., Ltd. Producer: Nantong Jiangshan Agrochemical & Chemicals Limited Liability Co., Ltd. Case number: A-570-168-019 Cash deposit rate: 135.28% Exporter: Zhangjiagang Fortune Chemical Co., Ltd. Producer: Shandong Yarong Chemical Co., Ltd. Case number: A-570-168-020 Cash deposit rate: 135.28% 4. If there are any questions by the importing public regarding this message, please contact the Call Center for the Office of AD/CVD Operations, Enforcement and Compliance, International Trade Administration, U.S. Department of Commerce at (202) 482-0984. CBP ports should submit their inquiries through authorized CBP channels only. (This message was generated by OVIII: DM) 5. There are no restrictions on the release of this information. Alexander Amdur

Frequently asked questions

What is CSMS 5168408?

CSMS 5168408 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Antidumping duty order on certain alkyl phosphate esters from the People's Republic of China (A-570-168)". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 5168408 published?

CBP published CSMS 5168408 on June 17, 2025. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Which AD/CVD cases does CSMS 5168408 affect?

CSMS 5168408 references 1 AD/CVD case (A-570-168). The links on this page take you to each linked order with its current scope, rates, and history.

Is the CBP CSMS the legally binding instruction?

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Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.