SHANGHAI, Mar 15 (SMM) – China’s industrial-grade lithium carbonate output stood at 15,196 mt in February, a month-on-month drop of 11% but a year-on-year growth of 61%. On the one hand, salt lake-based smelters ramped up their production after the weather warmed up. On the other hand, large spodumene-based smelters remained under maintenance, and the production of some lepidolite-based smelters was disrupted by environmental protection checks in late February.