quzhou longyuan trade co.,ltd -

quzhou longyuan trade co.,ltd

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synthetic corundum
Specification: 2kg/box,20kg/carton
Detail: synthetic corundum spec: Chemical Composition:Aluminum oxide with chromium and the chemical formula is Al2O3,Cr. Colours: All shades of red with hue of blue, brown, yellow and orange. Hardness: 9.0 Mohs Refractive...


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