... is extracted from stevia leaf. Rebaudioside A (Reb A or RA): 40%, 60%, 80% ,90%,95%,96%,97%,98%,99%,etc ... Stevia Rebaudioside -A .It is also called Reb A or RA.Our specification is as follow. TypeProduct CodeDescriptionTotal SteviolReb-ASTVReb-C ... have any requirement,please do not hesitate to contact us. RA