1. Heyuan gas 00297 1: China's helium mainly depends on imports, which is a scarce resource. Helium is recovered and purified from industrial tail gas, which is environmentally friendly, low in cost and resource-saving. However, affected by upstream resources, the production capacity is limited.
Judging from the compound growth of non-net profit deduction in recent five years, the compound growth of non-net profit deduction in recent five years is 20.48%, and the lowest non-net profit deduction in recent five years is 36.75 million yuan in 20 16 and the highest is 82.08 million yuan in 20 19.
2. Tianwo Technology 002564: The steam condensing tank belongs to the nuclear secondary pressure equipment of ITER project, and has successively completed acceptance tests such as pressure test, vacuum test, helium leak detection test, jack test, lug load test and stacking test.
Judging from the compound growth of non-net profit deduction in recent five years, the compound growth of non-net profit deduction in recent five years is 465,438+0.12%, and the lowest non-net profit deduction in recent five years is 2020-65,438+25.5 million yuan, and the highest is 2065,438+87.56 million yuan in 2007.
3. Yan Gang Gahona 300034: The company's main product, high-temperature alloy, is the key material for manufacturing hot-end components of aero-engines and the core material of large-scale power generation equipment, such as industrial gas turbines, helium turbines, thermal power generating sets and other power devices; 173t large vacuum induction furnace has passed the user's production certification.
Judging from the compound growth of non-net profit deduction in recent five years, the compound growth of non-net profit deduction in recent five years is 18.43%, and the lowest non-net profit deduction in recent five years is 48.88 million yuan in 20 17 years, and the highest is1830,000 yuan in 2020.
4. Cryogenic Co., Ltd. 300540: The company is one of the main suppliers of natural gas liquefaction process packages and devices in China, with helium gas extraction technology and helium gas liquefaction technology; On August 20, it was revealed that the company has successfully developed a patent for helium extraction and liquefaction based on nearly 20 years of cryogenic technology precipitation; The product development of helium extraction and liquefaction device has been completed. After the helium extraction device is put into construction, the resource dependence of 95% helium in China will be alleviated.
5. Walter Gas 688268: Judging from the compound growth of non-net profit deduction in recent five years, the compound growth of non-net profit deduction in recent five years is 30.22%, and the lowest non-net profit deduction in recent five years is 30 1.8 million yuan in 2065+06 and the highest is 86.79 million yuan in 2020.