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美国保护平流层臭氧：在制冷和空调以及消防领域的重大新替代品政策方案下列出替代品

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世界贸易组织	G/TBT/N/USA/1013/Rev.1/Add.1 2026-04-08 26-2718

技术性贸易壁垒	原文：英语

通报

修订补遗

以下 2026年04月06日的信息根据美国代表团的要求分发。

保护平流层臭氧：在制冷和空调以及消防领域的重大新替代品政策方案下列出替代品；拟议规则制定的补充通知

补遗理由：

补遗原因：
[]评议期变更-日期：
[]已通知采取的措施-日期：
[]通报措施公布-日期：
[]通报措施生效-日期：
[]最终措施文本可从¹获得：
[]通报措施撤回或撤销日期：

·若措施被重新通报，则相关编号为：
[X]通知措施的内容或范围发生变化，文本可从¹获得：除非举行公开听证会，否则必须在2026年5月6日或之前收到对本补充提案的意见。如果举行公开听证会，必须在公开听证会之日后30天或之前收到对本补充提案的意见。

https://members.wto.org/crnattachments/2026/TBT/USA/modification/26_01909_00_e.pdf新的意见截止日期（如适用）：2026年5月6日
[]发布的解释性指南和文本可从¹获得：
[]其他：

描述：补充拟议规则-根据美国环境保护署的重要新替代品政策计划，该行动建议将制冷剂2,3,3,3-四氟丙烯（也称为HFO-1234yf）列为可接受的，具体取决于使用条件，用于重型皮卡车和完整重型货车的改装。该行动补充了该机构2025年11月10日的提案，该提案涉及重型皮卡车和重型货车（完整和不完整货车）改装的机动车空调最终用途的拟议清单。美国环保署也在补充该提案，以澄清该拟议规则的预期范围。环境保护局正在提供一个机会，就额外的清单和澄清举行公开评议。EPA不会重新开放2025年11月10日提案中未明确提及的任何部分的评议期。
公开听证会：任何请求公开听证会的一方必须在下午5点之前通知“了解更多信息联系人”部分中列出的联系人，即Emily Maruyama，电子邮件地址：maruyama.emily@epa.gov。东部夏令时2026年4月13日或之前。如果举行公开听证会，将于2026年4月21日左右举行。有关公开听证会的更多信息，请参见补充信息部分。
91联邦公报(FR)17176，2026年4月6日；联邦法规（CFR）第40篇第82部分：

https://www.govinfo.gov/content/pkg/FR-2026-04-06/html/2026-06665.htm

https://www.govinfo.gov/content/pkg/FR-2026-04-06/pdf/2026-06665.pdf
本补充提议规则和早期提议规则由案卷号EPA-HQ-OAR-2024-0503标识。案卷文件夹可从Regulations.gov获取，网址为

https：//www.regulations.gov/docket/EPA-HQ-OAR-2024-0503/document，并提供对主要文件和支持文件以及收到的意见的访问。也可以通过搜索案卷号从Regulations.gov获取文件。
世贸组织成员及其利益相关者被要求在美国东部时间2026年5月6日下午4点或之前向美国TBT询问点提交意见。美国技术性贸易壁垒咨询点从世贸组织成员及其利益相关者那里收到的意见将与EPA分享，如果在评议期间收到，也将提交到Regulations.gov的备审案件目录中。

脚注1：可通过网站地址、pdf附件或其他最终/修订措施和/或解释性指南的文本出处获取上述信息。



	G/TBT/N/USA/1013/Rev.1/Add.1
	8 April 2026
(26-2718)
Committee on Technical Barriers to Trade		Original: English

NOTIFICATION

Addendum

The following communication, dated 6 April 2026, is being circulated at the request of the delegation of the United States of America.

_______________

Title: Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Refrigeration and Air Conditioning and Fire Suppression; Supplemental Notice of Proposed Rulemaking

Reason for Addendum:
[ ]	Comment period changed - date:
[ ]	Notified measure adopted - date:
[ ]	Notified measure published - date:
[ ]	Notified measure enters into force - date:
[ ]	Text of final measure available from[1]:
[ ]	Notified measure withdrawn or revoked - date: Relevant symbol if measure re-notified:
[X]	Content or scope of notified measure changed and text available from1: Comments on this supplemental proposal must be received on or before 6 May 2026 unless a public hearing is held. If a public hearing is held, comments on this supplemental proposal must be received on or before 30 days after the date of the public hearing. https://members.wto.org/crnattachments/2026/TBT/USA/modification/26_01909_00_e.pdf New deadline for comments (if applicable): 6 May 2026
[ ]	Interpretive guidance issued and text available from1:
[ ]	Other:

Description: Supplemental proposed rule - Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list the refrigerant 2,3,3,3-tetrafluoropropene, also known as HFO-1234yf, as acceptable, subject to use conditions, in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and complete heavy-duty vans. This action supplements the Agency's 10 November 2025 proposal with respect to the proposed listings in the motor vehicle air conditioning end-use for retrofit of heavy-duty pickup trucks and heavy-duty vans (both complete and incomplete vans). The EPA is also supplementing that proposal to clarify the intended scope of that proposed rule. The EPA is providing an opportunity for public comment on the additional listing and the clarification. The EPA is not reopening the comment period for any portions of the 10 November 2025 proposal, which are not explicitly addressed in this supplemental proposal.

Public hearing: Any party requesting a public hearing must notify the contact listed in the FOR FURTHER INFORMATION CONTACT section, which is Emily Maruyama at email address: maruyama.emily@epa.gov by 5 p.m. Eastern Daylight Time on or before 13 April 2026. If a public hearing is held, it will take place on or around 21 April 2026. Please refer to the SUPPLEMENTARY INFORMATION section for additional information on the public hearing.

91 Federal Register (FR) 17176, 6 April 2026; Title 40 Code of Federal Regulations (CFR) Part 82:

https://www.govinfo.gov/content/pkg/FR-2026-04-06/html/2026-06665.htm

https://www.govinfo.gov/content/pkg/FR-2026-04-06/pdf/2026-06665.pdf

This supplemental proposed rule and the earlier proposed rule are identified by Docket Number EPA-HQ-OAR-2024-0503. The Docket Folder is available from Regulations.gov at https://www.regulations.gov/docket/EPA-HQ-OAR-2024-0503/document and provides access to primary and supporting documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.

WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point by or before 4pm Eastern Time on 6 May 2026. Comments received by the USA TBT Enquiry Point from WTO Members and their stakeholders will be shared with EPA and will also be submitted to the Docket on Regulations.gov if received within the comment period.

__________

[1] This information can be provided by including a website address, a pdf attachment, or other information on where the text of the final/modified measure and/or interpretive guidance can be obtained.