Maybe you are interested in other sets of this series:
China 2021-27 Technological innovation III. Complete set of 5,MNH, VF, post fresh (Issued 24 Nov.2021)
The circulation of 2021 set, is only 45% of the circulation of 2017 set, 74% of the circulation of 2019 set.
China 2019-28 Technological innovation II. Complete set of 5,MNH, VF, post fresh
The circulation of 2019 set, is only 60% of the circulation of 2017 set.
China 2017-23 Technological innovation I. Complete set of 5,MNH, VF, post fresh
The first set of technological innovation stamps, the leader of the series
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The stamp design adopts hand-painted illustrations. The composition is simple and bright, the color combination is strong, the visual style is bright, and it has a certain sense of surrealism.
The first stamp: Shows the lunar exploration project "Chang'e 4" lander, "Yutu 2" patrol device, "Magpie Bridge" relay star, etc.;
The second stamp: It shows the two cloned monkeys "Zhongzhong" and "Huahua" born on November 27 and December 5, 2017;
The third stamp: A magnetically doped topological insulator film with ferromagnetism, bulk insulation and topological non-triviality with the meaning of a highway, and the band diagram, showing the efficient movement of electrons in the topological insulator film;
The fourth stamp: By expressing the human body environment such as the brain and intestines, as well as patterns such as seaweed, drug capsules, and chemical structural formulas, it reflects the novel drug action mode of GV-971 and unique multi-target action characteristics;
The fifth stamp: depicts the external shape of the high-current proton linear accelerator, fast-cycle synchrotron, and target station. The circular sphere suspended in the air represents the source of spallation neutrons in materials science, physics, life science, new energy, etc. Wide application and broad prospects in the field.
The use of color holographic positioning hot stamping technology, high technical content, strong anti-counterfeiting performance, is the best choice for scientific and technological innovation among many printing methods.
It is the first time to superimpose the printing pattern on the color holographic positioning hot stamping pattern, which is a great challenge to the processing accuracy, and is another masterpiece of China's stamp improvement.
This set of stamps was designed by Du Yukai and printed by the offset printing process of Henan Post and Telecommunications Printing Factory.