gantry crane
In Obama's speech calling for the use of American-made products, the national flag was blown off to reveal the Zhenhua logo.
The portal cranes produced by Zhenhua Port Machinery occupy 80% of the global portal crane market, and almost monopolize the portal cranes of 1000 tons. The gantry crane built for Brazil's BrasFELS Shipyard is as high as 2,000 tons.
Large gantry crane is essential for China warships to get down to Jiaozi.
Britain imported1000t gantry crane, which cost 20 million dollars to build an aircraft carrier. India is unwilling to buy products made in China, so it can only be used by Britain.
EHV transmission network
China Xinjiang UHV transmission network
China can be said to be one of the only two countries in the world with all the land from cold zone to tropical zone. Therefore, this power grid should not only be able to withstand the low temperature of MINUS 30 degrees in cold regions, but also be able to withstand the test of high temperature of 50 degrees. It should be able to resist the impact of strong typhoon from the ocean, the corrosion of coastal salt fog environment and the attack of Gobi sandstorm. But also bear the impact of various geological disasters such as mudslides.
During the blackout in North America in 2003, more than 50 million people lost power.
Compared with developed countries, China's power grid is not only the largest, but also highly reliable. Europe and America are regional power grids, which generate electricity for local use. There is no super-large-scale power dispatching like China. Even so, there will still be large-scale power outages in Europe and North America.
High power ultraviolet laser crystal
China has been ahead of the world for about 20 years in terms of crystals for high-power ultraviolet laser. In February last year, the United States announced that it had broken through the blockade of China for 15 years, and produced KBBF crystal, which is used for optical emission electron microscope and ultra-high power laser, and is also the core component for manufacturing mask aligner, while mask aligner is the core equipment for producing CPU chips.
An article in Nature magazine published Academician C.T. Chen and his KBBF crystal.
The main reason why China shields this technology is its military use, and high-power crystal is the core technology of laser directed energy weapon.
Laser beam weapon
China is far ahead of "foreign countries" in this field, and its power output exceeds "foreign countries" by more than one order of magnitude. Because of China's strict blockade of this kind of technology, the international condensed matter physics research is affected. For example, a famous foreign laboratory cannot require a small piece of crystal at home. In 2009, Nature magazine wrote a special article condemning this selfish behavior, which is not conducive to the development of human technology.
One-way valve of coal-to-oil technology
Coal-to-oil technology China is in an absolute leading position in the world, but today we don't look at coal-to-oil technology, but at a small part of this huge system: one-way valve.
It turns out that there is only one German company in the world. How much profit did they make? The price of a small valve is as high as 6.5438+0.8 million RMB, and the longest service life is only 3 hours. The average depreciation charge is one minute 1 ten thousand yuan. After China Hunan Sidi Technology Company developed the one-way valve, the price was only RMB 200,000, and its service life exceeded 1 year. This German company has completely dropped out of the competition. Any other country in the world wants to develop coal-to-oil technology. If it doesn't buy equipment from China, it can't compete with China.