we buy broken or whole wafers.pot scrap. ingots. tops and tails. solar cells. slurry. powder. granules. and so on. we also buy other types of materials like germanium. indium. gallium. platinum. rhodium. gold. silver. and also nano materials! please contact steve . we can get you the best prices for your material please don't hesitate to call us. we look forward to your business! best regards from industrial silicon recycling (isr)