used this herb as treatment of influenza and fistula hyperemia and as sweetener for hundreds of years.
3. High stability and economical to use. Stevia sugar solution in PH3 condition and room temperature almost does not decomposeorform sediment if kept for 180 days. It has no change at if heated to 100tem. For 1 hour in the range of PH3 to PH9. Its final products do not change brown when heated, while the cost is only 10-30% of that using cane sugar.