China
| Country: | China |
| Type: | Postage stamps |
| Series: | Developmentof Petroleum Industry |
| Nominal: | 20 分 |
| Year: | 1978 |
| Perforation: | comb 11 |
Developmentof Petroleum Industry
 Oil-well derrick |  Petroleum production |  Laying of oil lines |  Petroleum refinery |
 Oil port |  Oil rig |