WE SELL MONO SILICON INGOT : ORIGIN : MADE IN CHINA BY DIRECT MANUFACTURER. GRADE : SOLAR GRADETYPE : P - TYPEPURITY : 6N 99. 9999% RESISTIVITY 0. 5 - 3. 0 OHM CMSIZE : 6" INCH ROUND INGOT ( DIAMETER 152- 153 mm ) 8" INCH ROUND INGOT ( DIAMETER 202- 203 mm ) LIFETIME : > = 10 USECQUANTITY : 10 - 20 METRIC TONS PER MONTH AT LONG TERM SUPPLY.