Ukuhlaziywa kwemodeli entsha yokusebenza ngokudayisa kanye nemodeli yenzuzo yabathengisi bezitolo zamasheke baseShayina
Ngokuthuthuka okusheshayo komnotho waseChina, isidingo emkhakheni wezimboni siyakhula, imboni ye-valve njengengxenye ebalulekile yemboni eyisisekelo, isidingo semakethe sinamandla. Phakathi kwazo, iChina, njengesizinda esibalulekile semboni yama-valve yaseChina, inomuntu...
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