1.our own factory and base 2.top quality with competitive price 3.have rich exporting experience ... is as follow.Stevioside: 80%,90%, 95%, 98% Rebaudioside A (Reb A or RA): 40%, 60%, 80% ,90%,95%,96%,97 ... see our product list: Product Code Description Total SteviolGlycosides Reb-A STV Reb-C & DASweetness SG98RA9898% Rebaudioside-A98%~98.60 ... requirement,please do not hesitate to contact us. Rebaudioside A