| Value | Category | Cases | |
|---|---|---|---|
| 1 | Nylon bags | 162 |
11.7%
|
| 2 | Special bags | 83 |
6%
|
| 3 | Carton boxes | 15 |
1.1%
|
| 4 | Metal boxes | 42 |
3%
|
| 5 | Plastic boxes | 62 |
4.5%
|
| 6 | Others, specify | 32 |
2.3%
|
| Sysmiss | 989 |