Tungsten Trioxide yellow powder. Tungsten trioxide, yellow powder, insoluble in water. Soluble in alkali. This is used for the manufacture of high melting points alloys and hard alloys, as well as tungsten wire and fireproof material. Color: yellow,
Boron is a solid black or silvery-gray color. Crystal boron has a black color, is second in hardness only to diamond, and has an brittle surface. Purity>95%Particle size: 0.08-5um About Boron Amorphous Boron: The powder of Boron is black
Dysprosium Oxide is a white, powdery substance with chemical formula Dy2O3. Magnetic properties are stronger than high-speed oxidized iron. Insoluble in acid and alcohol. Mainly used in lighting. Purity: 99.9%Particle Size: -100mesh About
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