| Value | Category | Cases | |
|---|---|---|---|
| 1 | Nylon bags | 141 |
5.1%
|
| 2 | Special bags | 192 |
6.9%
|
| 3 | Carton boxes | 217 |
7.8%
|
| 4 | Metal boxes | 51 |
1.8%
|
| 5 | Normal plastic boxes | 321 |
11.5%
|
| 6 | Special plastic boxes | 75 |
2.7%
|
| 7 | Others, specify | 169 |
6.1%
|
| Sysmiss | 1618 |