bids are invited for aluminum oxide nanopowder less than 50 nm particles size greater than 99.5% purity (pack of 50g) (q3) , zinc oxide nanopowder, less than 50 nm particle size, greater than 97% purity (each pack of 25 g) (q3) , zirconia oxide nanopowder less than 50 nm particle size greater than 99.5% purity (each pack of 25g) (q3) , titanium oxide anatase powder, less than 25 nm particle size, greater than 99.7% purity (pack 100g) (q3) , titanium oxide rutile nanopowder less than 25 nm particle size, greater than 99.5% purity (pack100g) (q3) , silicon oxide powder less than 25 nm particle size, greater than 99.5% purity (each pack of 50g) (q3) , barium titanate nanopowder, less than 25 nm particle size, greater than 99.9% purity (pack of 100g) (q3) total quantity : 14