Packing specification:

Boxed 1 box of 20, a total of 100 pieces

Boxed 2 boxes of 40, a total of 200 pieces

Boxed 3 boxes of 60, a total of 300 pieces

Boxed 4 boxes of 80 pieces, 400 pieces in total

10 strips, 50 pieces in total

5 strips, 25 pieces in total