... %,98%, Rebaudioside-A 40%, 60%, 80%, 90%, 95%,97%,98% GMP Factory Free sample 100% Natural Stevia ExtractName: Stevia P.E.Plant of ... react to acid, alkali, heat and light. It does not ferment. It does not get moldy and deteriorate in quality if stored ... can slow the growth of bacteria thus prolong the freshness quality guaranteed period. In addition, Stevia can reduce up to 60 ...