We are looking for the following silicon materails:

Item 1: mono crystalline silicon ingot(solar grade)

Conductivity type: P/Boron <CZ>
Diameter: 6" or 8"
resistivity 0.5-3ohm.cm ,3-6ohm.cm
lifetime >10us
Orientation: <100>
Oxygen cotent <= 1.0x10 18 atoms/cm 3
Carbon cotent <=5.0x10 16 atoms/cm 3
Dislocation density <=100/cm 2
Nomal ingot length: 470mm
Min. ingot length: >= 100mm

Item 2: mono crystalline silicon wafer(solar grade)

Conductivity type:： P/Boron <CZ>
Size: 125mmx 125mm or 156mmx 156mm
resistivity 0.5-3ohm.cm ,3-6ohm.cm
lifetime >10us
Orientation: <100>
Oxygen cotent <= 1.0x10 18 atoms/cm 3
Carbon cotent <=5.0x10 16 atoms/cm 3
EPD < 2000 pcs/cm 2
TTV <= 40um

Item 3: multi crystalline silicon wafer(solar grade)

Conductivity type: P-type (boron)
Resistivity: 0.5 - 3.0 ohm-cm
Size: 125mmx 125mm or 156mmx 156mm
Life time: >=2 μ s
Oxygen content: <= 8x10 17 atoms/cm 3
Carbon content: <= 2x10 18 atoms/cm 3
TTV: <=50 μ m
Thickness: 240um±30

Item 4: Poly silicon chunk

Resistivity >0.5ohm.cm
Purity > 99.9999%

Item 5: Tops & tails(solar grade or IC grade)

P type or N type
Resistivity >0.5ohm.cm
Purity > 99.9999%

Item 6: Pot scrap(solar grade or IC grade)

Conductivity type: P type
Resistivity >0.5ohm.cm
Purity > 99.9999%

Item 7: Off-spec completed wafer, Broken wafer（solar grade or IC grade）P type or N type

Resistivity >0.5ohm.cm

Item 8: Blue tale (size of boken wafer should be larger than 10mm * 10mm )

Resistivity >0.5ohm.cm