Comprehensive catalogue covering Mainland China, Hong Kong and Macao postage stamps, including commemorative, definitive, special and thematic issues.
中国邮票大全,涵盖大陆、香港、澳门邮票,含纪念、特种、普通、主题邮票
2019-28, Science and Technology Innovation (2)《科技创新(二)》
Stamp Title: Science and Technology Innovation (2) Serial number: 2019-28 Values in set: 5 (5-1), Chang'e 4 Probe, 120 fen, 40 * 30 mm (5-2), Cloned Monkeys Using Somatic Cells, 120 fen, 40 * 30 mm (5-3), Experimental Discovery of the Quantum Anomalous Hall Effect, 120 fen, 40 * 30 mm (5-4), New [...]