YY747A mtundu wachisanu ndi chitatu uvuni wamadengu ndi chinthu chokwezera cha YY802A ng'anjo yadengu eyiti, yomwe imagwiritsidwa ntchito pozindikira msanga chinyezi cha thonje, ubweya, silika, ulusi wamankhwala ndi nsalu zina ndi zinthu zomalizidwa;Kuyesa kubwereza kwa chinyezi kamodzi kumangotenga mphindi 40, kuwongolera bwino ntchito.