Comment submitted by China WTO/TBT National Notification & Enquiry Center

Summary: The China WTO/TBT National Notification & Enquiry Center supports the proposed action but recommends expanding the exemption scope to include rail transport refrigeration units (TRUs) due to their similar risk profiles to road units. They also urge the U.S. to provide a clear technical roadmap and guidelines for low-GWP alternative refrigerants to support the global transition away from HFCs.