Yunnan wakuda tiyi processing luso kudzera kufota, kukanda, nayonso mphamvu, kuyanika ndi njira zina kupanga tiyi, kulawa mofewa. Njira zomwe zili pamwambazi, kwa nthawi yayitali, zimagwiritsidwa ntchito pamanja, ndi chitukuko cha makina opangira tiyi a sayansi ndi zamakono amagwiritsidwa ntchito kwambiri. Njira Yoyamba: P...
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