The Stevia powder we are looking for is the one without bitterness and no after taste for use in Soft Drink to substitute Cane Sugar.For the purity, I think that the higher percentage would be the best. We are open to your suggestion in that matter, as it is the first time we are going to use it.The annual Volume would be around 10 MT per year or around 1MT shipment per month, depending on the sweetness power. Please quote CIF Miami, Florida (USA)RegardsCountry:USA