| Value | Category | 
|---|---|
| 1 | Village market | 
| 2 | District market | 
| 3 | Farm gate | 
| 4 | Wholesale market | 
| 5 | Commercial company | 
| 6 | Cooperative | 
| 7 | International | 
| 8 | Other | 
| 2147483622 | Don't Know | 
| 2147483623 | N/A | 
| 2147483625 | Refused to answer | 
| 2147483645 | Missing | 
| 2147483646 | Outrange | 
| 1000000001 | .B |