What are the regulatory and compliance requirements for buying and shipping R134a in China?

What are the regulatory and compliance requirements for buying and shipping R134a in China?
R134a is not classified as an ozone-depleting substance, so it does not require the special ODS registration that applies to R22. However, it is regulated as a hazardous chemical under China's Dangerous Chemicals Safety Management Regulations, meaning transport and storage must follow strict rules. For international shipping, R134a is listed under UN 3159, classified as Class 2.2 non-flammable gas, with EmS F-C,S-V. Exporters must provide a dangerous goods declaration, a hazardous goods packaging certificate, an English MSDS, and a shipping application form. Importers and distributors should ensure their suppliers hold proper production quotas, as unlicensed production is illegal. Since 2025, the market has seen a rise in counterfeit product, so verifying purity (minimum 99.9%) and obtaining certificates of analysis is essential for both safety and system performance.