China
| Country: | China |
| Type: | Postage stamps |
| Series: | 50th Anniv. of Chinese Academy of Science |
| Nominal: | 80 分 |
| Year: | 1999 |
| Perforation: | comb 12 |
50th Anniv. of Chinese Academy of Science
 Cambrian Period Fossil |  Underwater robot |  Goldbackh conjecture |  2,16 Mm Telescope |