The selenium powder made by the vapor phase system has higher purity, high-quality particle dimension, and fantastic exercise and is appropriate for fields with large necessities. Immediately after three~5h, the soften is created, and also the glass frit formed by cooling is quenched and cooled, water Glass was ready by https://www.facebook.com/permalink.php?story_fbid=pfbid02qWcsLEdcDCxfGxhVRDpsQbkpBhVDSVtYgV1kDBq9GEUcDXRyuPjbGUoq2jC4Hzopl&id=61569401052276