Exercise 1
5495160
Inventory 2
1832740
Inventory 3
4084598
Headset Design Scheme
2287394
The spiral structure of the paper roll design makes it more convenient for girls to pull out.
533111
Headset Scheme 2
1273901
Old Headset Design Scheme
2463472
1883207
2031937
1283624
1632874
