As a recent example: a low-calorie drink containing Rebausioside A extract (Stevia rebaudiana), sold in supermarkets. Indeed, since 1996, GREENTECH has developed steviol glycosides, derived from stevia leaves: the Reb A 97 GT. Today, GREENTECH is one of the 3 leading companies in the production of high purity Rebausioside A, a sweetener with 100% natural origin.