Aluminium:Silicon foils with following specification : A. Material specification A.1) Alloy composition::   Al:Si = 88.3:11.7 A.2) Aluminium purity and impurity contents :    Al = 99.99% Minimum    Impurity contents :-           Fe + Cu + Zn + Ti <= 100 ppm           of which, Fe + Ti <= 50 ppm                and, Cu + Zn <= 50 ppm A.3) Silicon purity = 99.999% Minimum [semiconductor quality] B. Foil specification B.1) Finish: Natural with metallic bright B.2) Surface roughness, Ra = 4 microns B.3) Hardness, HV = 50g; 30-70 Kg/sq.mm B.4) Foil shall not have residues of grease, oil, stains. B.5) Foil shall not have any scratches or dents. You are requested to quote for the following foil dimensions (mm): 1) Width=60+/-0.1, thickness=0.08+/-0.005 :  Qty = 3 Kg 2) Width=38+/-0.1, thickness=0.08+/-0.005 :  Qty = 2 Kg 3) Width=24+/-0.1, thickness=0.08+/-0.005 :  Qty = 1 Kg