Scientific evidence shows the ozone layer is gradually recovering, with 99% of ozone-depleting substances phased out globally, thanks to effective international cooperation and the success of the Montreal Protocol, which aims for full recovery by 2066.

Vietnam's legal framework, including the 2020 Law on Environmental Protection and recent decrees, supports ozone protection and promotes environmentally friendly technologies, especially in refrigeration and air conditioning industries.

Protecting the ozone layer also helps mitigate climate change by reducing greenhouse gases, although challenges remain, such as the safety risks of new refrigerants that are flammable and require skilled handling and recycling systems.

Vietnam plans to reduce over 11 million tonnes of CO₂ equivalent from HFCs by 2024–2025, aligning with its goal to achieve net zero emissions by 2050, and has already prevented emissions equivalent to about 240 million tonnes of CO₂ as of August 2025.

Amendments like the Kigali Amendment (2016) expanded efforts to phase down HFCs, potent greenhouse gases, with compliance expected to prevent significant temperature increases, building on the success of the Montreal Protocol and its amendments.

Vietnam's participation in international conventions, supported by global funds and organizations, facilitates transitioning to safer, energy-efficient cooling solutions, though coordination among government, enterprises, and international bodies remains crucial.

The discovery of the Antarctic ozone hole in the 1980s prompted international action, leading to mechanisms like the Vienna Convention and the Montreal Protocol to regulate hazardous chemicals such as CFCs and halons.

As the 40th anniversary of these international efforts is commemorated, the success of the Vienna Convention and the Montreal Protocol in phasing out ozone-depleting substances highlights the importance of continued global cooperation.

In Vietnam, ozone protection activities are integrated with broader goals of reducing greenhouse gases, promoting a green transition, and enhancing competitiveness through public awareness campaigns and sustainable technology promotion.

Vietnam has actively eliminated and controlled ozone-depleting substances, achieving full elimination of CFCs, Halons, and CTCs by 2010, and phased out HCFC-141b in foam production by 2015.

China has played a significant role in ozone protection, eliminating over half of its produced or used ozone-depleting substances since joining the Montreal Protocol in 1991 and accepting the Kigali Amendment in 2021.

Experts emphasize that full recovery of the ozone layer is possible but will take decades, requiring ongoing global cooperation and action to address related issues like climate change and pollution.