Industry insiders believe that the technical barriers to lithium extraction from lepidolite have been resolved and it has become competitive. After 2018, it will become an important source of lithium carbonate supply. In the current supply pattern of lithium resources, the amount of lithium extracted from spodumene tends to be determined, and the extraction of lithium from lepidolite and the extraction of lithium from salt lakes have become important variables. At this stage, the technical problems of lithium