SHANGHAI, Jun 20 (SMM) -Cobalt sulphate prices rose slightly last week, and the increase rate slowed down. The raw materials prices of cobalt salt have risen slightly, leading Co3O4 prices to rise. Downstream LCO producers had to cut costs due to the rising prices of battery-grade lithium carbonate and Co3O4. Some plants mainly produce Co3O4, and there are still some stocks of it. Co3O4 prices may inch higher this week.
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