Dongyue Group's stock price surged 7.72% at market open on Tuesday, following favorable policy developments regarding hydrofluorocarbons (HFCs) from the United States and the United Kingdom.

The rally was primarily driven by two key regulatory announcements. The U.S. Environmental Protection Agency (EPA) formally signed and released a final rule that significantly relaxes Global Warming Potential (GWP) limits for multiple core sub-sectors, effectively extending the legal service life of third-generation refrigerants in the U.S. market. Concurrently, the UK's Department for Environment, Food and Rural Affairs announced a delay to its proposed steps for phasing down fluorinated gases.

Analysts note that these extended usage periods overseas provide stronger demand-side support for HFCs. Given that global HFC production capacity is predominantly concentrated in China with limited overseas supply, Chinese refrigerant producers like Dongyue Group, a major fluorine-silicon chemical materials manufacturer, are positioned to benefit significantly from the sustained industry tailwinds.