YY747A nau'in tanda kwando takwas shine samfurin haɓaka na YY802A tanda kwando takwas, wanda ake amfani dashi don saurin gano danshi na auduga, ulu, siliki, fiber na sinadarai da sauran kayan yadi da kayan da aka gama;Gwajin dawo da danshi guda ɗaya yana ɗaukar mintuna 40 kawai, inganta ingantaccen aikin yadda ya kamata.