| Value | Category | Cases | |
|---|---|---|---|
| 1 | Nylon bags | 93 |
4.8%
|
| 2 | Special bags | 93 |
4.8%
|
| 3 | Carton boxes | 57 |
2.9%
|
| 4 | Metal boxes | 44 |
2.3%
|
| 5 | Plastic boxes | 394 |
20.2%
|
| 6 | Others, specify | 20 |
1%
|
| Sysmiss | 1249 |