On June 5, the first training course for import and export enterprises of Montreal Protocol controlled Substances in 2024 was held in Hefei. The training course fully conveyed the relevant ideas of Monyo, which is conducive to the safe production and import and export trade of enterprises. The training course explained the controlled substances under the Montreal Protocol and their uses, listed the ozone-depleting substances (ODS) that are prohibited from production and use in China, and conveyed China's firm determination to protect the ozone layer. The participating enterprises have a deep understanding of the relevant contents of the protocol and actively participate in the discussion. The leaders of relevant departments also actively answer the relevant questions of the participating enterprises, successfully completing the training task.