1)motor (1 piece)        2)controller (1 piece)       3)wiring (1 piece)                4)strap (1 piece)               5)4200mm track(1 piece)
6)tail wheel(1 piece)          7)sensor (2 pieces)     8)door stop (2 pieces)      9)hanger(4 pieces)     10)arrester(2 pieces)
11)strap connection device (2 pieces)      12)direction tag( 4 pieces)           13)construction book, guarantee card (1 piece)
14)4200mm aluminum cover(optioal)    15)battery wiring(2 pieces){optional}
3. Guarantee period :one year;

220v