... is extracted from stevia leaf. Rebaudioside A (Reb A or RA): 40%, 60%, 80% ,90%,95%,96%,97%,98%,99 ... Rebaudioside -A .It is also called Reb A or RA.Our specification is as follow. TypeProduct CodeDescriptionTotal SteviolReb-ASTVReb-C ... %~61%25%5%~6%>320 timesSG90RA5050% Rebaudioside-A90%50%~52%33%6%~7%>300 timesSG85RA4040% Rebaudioside-A85%~87%40%~ ... requirement,please do not hesitate to contact us. RA