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The United States, France, Sweden, China, and Germany joined the International Commission on Commercial Law on January 1, 1988. Ozone Layer Protection Day is a day of protection related to the Treaty of Vienna, the Montreal Protocol. The main content is to reduce the main substances of ozone total destruction, such as Freon gas chlorofluorocarbons and halons. Many people have joined the protocol, and it is so important that all UN member states will join it. I drew this day of protection.