Details：
Purity: 99~99.9999% Particle size: 0.3 ~ 20μm Appearance: brown powder Characters: It is tasteless and odorless, and stable in air at room temperature
Purity: 99~99.9999%
Particle size: 0.3 ~ 20μm
Appearance: brown powder
Characters: It is tasteless and odorless, and stable in air at room temperature
