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  • The origin and physical characteristics of boron powder Date: 2020-05-29 13:48:07 Click: 69 Comment: 0

    The content of boron in the earth's crust is 0.001%. Boron is a black or silver-gray solid. Crystal boron is black, second only to diamond in hardness, and has a relatively brittle texture. Boron is named Boron; its name comes from Arabic; t...