1. Epi scrap wafers (6 & 8 inch) 25pcs in a box P-type, 100, Sub res ress than 1 Epi res more than 1.5 2. Broken wafers (drum or coinroll) sold by kg Resistivity less than 0.5 3. Mixed (high and low res) Broken wafers (drum) Resistivity more or less than 0.5ohm cm