E Thehiloe ka 1994, Yongjie e ile ea hlophisoa bocha ho tloha lebitsong la pele la Southeast Aluminium Co, Ltd, ho ea k'hamphaning e kopanetsoeng ka 2011. E le khoebo ea senotlolo sa theknoloji e phahameng ea naha, Yongjie e inehetse ho nts'etsopele le tlhahiso ea ts'ebetso e phahameng, e phahameng -precision aluminium alloy sheet, coil le lihlahisoa tsa foil, ho loanela ho ba mofani oa thepa ea boleng bo holimo ea aluminium linthong tsa likoloi, matla a macha le liindasteri tse ling, mme e khona ho fa bareki tharollo e felletseng ka lisebelisoa tsa aluminium alloy.