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BEIJING Nike Air VaporMax 97 Plata Bullet Baratas , July 28 (Xinhua) -- China is developing a new generation of atomic clock, which it aims to use on the Beidou Navigation Satellite System, according to China Aerospace Science and Technology Corporation (CASTC) Friday.


The microwave mercury ion clock is currently one of the most accurate tools for measuring time by tracking atomic movement in the microwave range, said Wang Nuanrang, project leader at the CASTC.


It can provide extremely precise measurements of time that can be used in the fields of deep space exploration and satellite navigation.


Wang said that scientists will establish an experimental mercury ion clock system to conduct scientific tests within the next four years Nike Air Max 2 Uptempo Quickstrike Release Negras Baratas , promoting the development of the Beidou system.


Since 2012, China's self-developed Beidou system has provided navigation, time and text messaging services in the Asia Pacific region.


By 2020, Beidou satellites will form a complete global satellite navigation system, according to China Satellite Navigation System Committee.


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HOHHOT, Dec. 20 (Xinhua) -- Chinese rare earth miners are being forced to phase out excessive production capacity as rising overseas suppliers chip away at their dominance in the global market.


Russia announced in April its plan to invest 1 billion U.S. dollars in rare earth mining in its Tomtorsky field, which holds 154 million tonnes of ore containing several rare earth elements.


Greenland also lifted its long-time ban on rare earth mining in October of this year in hope of developing the industry to support domestic welfare payments and employment.


Other major rare earth consuming nations, such as the United States and Japan Hombre OFF White Nike Zoom VaporFly The Ten Blancas Baratas , have also looked elsewhere to meet their demand for the 17 rare minerals, which are used to make a range of high-tech products from cell phones and wind turbines to hybrid cars and airplane equipment.


"The future doesn't bode well for Chinese rare earth firms," said Yang Zhanfeng, head of the Baotou Research Institute of Rare Earth.


"While severe overcapacity plagues the domestic rare earth industry, progress in exploiting rare earth reserves in other countries also adds to the pressure on Chinese companies Hombre Nike Air VaporMax Plus Blancas Baratas ," Zhang said.


Yet many companies told Xinhua it will still be difficult for other countries to unseat China as a major exporter of rare earth elements since overseas mines being explored contain mostly light elements, while the majority of heavy minerals still come from China.


Increased production in other countries has reduced China's share of the global rare earth supply from more than 95 percent to 80 percent since 2010, when China nearly halved its rare earth export quota in a bid to overhaul heavily polluting and unregulated extraction and production.


Chinese authorities have repeatedly said that overreliance on Chinese supply is irrational considering the country's rare earth reserves account for less than 30 percent of the world's total -- a sign that China is overexploiting its rare earth resources to meet global d