every pcs inspection
test project:
1.appearance
2.motor power
3.battery charge ability
4.box demand
every pcs inspection
test project:
1.appearance
2.motor power
3.battery charge ability
4.box demand
every pcs inspection
test project:
1.appearance
2.motor power
3.battery charge ability
4.box demand
every pcs inspection
test project:
1.appearance
2.motor power
3.battery charge ability
4.box demand