Mu 1989, Bwana Zhaoyun Du yashinze Shenyang Great Wall Filtration Co., Ltd., guhera mu ntangiriro, kandi atanga umusanzu ukomeye mu iterambere ry’inganda zo mu Bushinwa.Muri 2013, Bwana Zhaoyun Du yitabye Imana.Mu myaka irindwi, Madamu Du Juan, umuyobozi mukuru mushya, yayoboye byinshi ...
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