Do gd chuyen nha em can ban lai :
- may xay da nang 3A 2,2kg (xay co, xay bap...) (mua moi 6tr, ban lai 3tr)
- may phun thuoc, rua xe chay bang dien 1,5kg. ( mua moi hon 4tr, ban lai 3tr moi mua 4 thang nay)
- may cat sat
- may cat mo ga
- den um ga bang gas, um duoc 1000 con