Buy IC/ solar broken/scrap silicon wafer,top and tail,pot scrap,polychunks Buyer and Importer

I'm the purchase manager of Shanghai JD Electronics.We are the main silicon materials buyer located in China.We are keep sourcing the scrap silicon materials such as broken/scrap wafer,top&tails,ingot fallout,pot scrap and so on.The following red marked is our basic purchase requirement on silicon materials: Our basic requirement for silicon materials is: Purity >6N(99.9999%), P type, Resistivity >0.5ohm.cm, Ic grade is prefer. & We are sourcing following items for long term Item A IC grade scrap/broken/fallout silicon wafer (bare) 1. Diameter >= 50 mm 2. Thickness: > 500 um 3. Without pattern/coated/film & metal diffusion (little percent is permitted) Item B IC grade top & tails/ pot scrap 1. Carbonon materials such as broken/scrap wafer,top&tails,ingot fallout,pot scrap and so on.The following red marked is our basic purchase requirement on silicon materials: Our basic requirement for silicon materials is: Purity >6N(99.9999%), P type, Resistivity >0.5ohm.cm, Ic grade is prefer. & We are sourcing following items for long term Item A IC grade scrap/broken/fallout silicon wafer (bare) 1. Diameter >= 50 mm 2. Thickness: > 500 um 3. Without pattern/coated/film & metal diffusion (little percent is permitted) Item B IC grade top & tails/ pot scrap 1. Carbon Show More