1, kev thauj khoom los ntawm impurities nyob rau hauv txoj siv kua muag.Infusion ntawm impurities nyob rau hauv cov khoom siv rau qhov chaw nres nkoj thee, lub ntsiab zoo ntawm cov thee tsis zoo, cov thee hauv cov thee loj thiab ntau yam impurities, xws li hlau, sticks, thiab lwm yam, txog 70-80% ntawm cov kua muag, yog li ua kom cov qhov chaw ntawm cov ...
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