The conclusion of the Montreal Protocol aims to control and gradually phase out the production and use of ozone-depleting substances (ODS). Each signatory country must phase out ODS production and use according to a specified timetable to meet annual compliance targets. The protocol sets national baselines for each country for each type of ODS, which are the maximum allowed production, consumption, and import/export volumes, as well as specific and fully quantified control targets for various substances for each year. Countries must organize their production, consumption, and import/export activities within these annual control targets.
Due to these specific quantified requirements for compliance with the Montreal Protocol, the environmental protection department has gradually established a quota permit system for the production, use, and import/export of ozone-depleting substances. According to the provisions and requirements of the protocol, enterprises that had corresponding production and consumption in the baseline year are granted initial quotas and are issued annual quotas each year; enterprises that did not produce or consume in the baseline year do not have the right to obtain corresponding quotas. Thus, the ODS production and use quota permits are only applicable to a fixed range of enterprises, and any new enterprises do not have the right to apply for production and use quotas and engage in corresponding business activities.