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, qhov zoo tshaj plaws ntawm cov thee tsis ntse, 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 mak. ..
Nyeem ntxiv