Ko Stevia rebaudiana he tipu otaota mohoao o te whanau Compositae me te puninga Stevia, no te ngahere o Paraguay me Brazil i Amerika ki te Tonga. Mai i te tau 1977, Beijing, Hebei, Shaanxi, Jiangsu, Anhui, Fujian, Hunan, Yunnan me etahi atu waahi i Haina kua whakaurua, kua whakatipuria....
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