Cobalt oxide powder mainly contains CoO, Co2O3, and Co3O4. High-grade cobalt oxide containing more than 74% cobalt is brown, and cobalt oxide containing 74% or less cobalt is black. According to its use and chemical composition, according to national standards, refined cobalt oxide powder is mainly divided into two series of Y and T, and Y products are divided into three brands of Y0, Y1, and Y2, ...
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