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SHANGHAI, Nov.16 (Xinhua) -- U.S. President Barack Obama said here Monday the United States has a positive, constructive and comprehensive relationship with China.     Obama made the remarks during a dialogue with Chinese youth in China's economic hub Shanghai. U.S. President Barack Obama gestures as he delivers a speech at a dialogue with Chinese youth at the Shanghai Science and Technology Museum during his four-day state visit to China, Nov. 16, 2009."Today we have a positive, constructive and comprehensive relationship that opens the door to partnership on the key global issues of our time: economic revocery, development of clean energy, stopping the spread of nuclear weapons and the surge of climate change, the promotion of peace and security in Asia and around theglobe," he said.     Obama arrived in Shanghai late on Sunday and met city officials Monday morning before his meeting with young Chinese.     He will head to Beijing Monday afternoon.

BEIJING, Dec. 11 (Xinhua) -- Chinese Premier Wen Jiabao on Friday urged fast and sound development of meteorological work, stressing its important role in tackling global climate change, disaster prevention and sustainable socio-economic growth.     Wen made the remarks when visiting the China Meteorological Administration (CMA), which celebrated its 60 founding anniversary on Dec. 8. Chinese Premier Wen Jiabao (C) looks through a microscope, at the laboratory of the National Climate Center while visiting China Meteorological Administration in Beijing, capital of China, Dec. 11, 2009.Wen urged the meteorologists to improve accuracy and timeliness of the forecasts of major meteorological disasters, and asked them to strengthen their capabilities in dealing with such incidents and improve contingency plans to cope with disasters.     Quality meteorological services should also be provided to all sectors of society, he said. Chinese Premier Wen Jiabao (2nd L) meets with climate experts and workers at the National Climate Center while visiting China Meteorological Administration in Beijing, capital of China, Dec. 11, 2009.Wen told the meteorological authority to beef up research on the impact of climate change on grain, economy, energy, and ecological environment, and work out better response to help the nation meet the emission cut target.     The premier also visited the national satellite meteorological center, a subsidiary of CMA and read the real time meteorological information sent by the satellite. He also observed the meteorological conditions in the quake-hit Sichuan province through video. Chinese Premier Wen Jiabao (2nd R) looks at a meteorological satellite model of FY-series at the National Satellite Meteorological Center while visiting China Meteorological Administration in Beijing, capital of China, Dec. 11, 2009

URUMQI, Dec. 6 (Xinhua) -- A railway became operational Sunday in west China's Xinjiang Autonomous Region, which is expected to boost the transportation from China to central Asia and Europe, said local railway authorities.     The railway, called Second Urumqi-Jinghe Line, runs 381.5 km and links the region's capital Urumqi and Jinghe county. It has a designed transportation capacity of 67.1 million tonnes, which is expected to grow up to 91.7 million tonnes in the future. With a designed speed of 120 km per hour, the railway cost 2.77 billion yuan, according to a statement from Xinjiang Railway Bureau.     Jinghe is linked to Horgos and Alataw Pass, ports on the China-Kazakhstan border, by two other railways. One starts from Jinghe and ends at Horgos. The other runs from Urumqi through Jinghe to Alataw Pass.     The launch of the new railway would greatly enhance China's transportation capacity to Kazakhstan and further into other countries in central Asia and Europe, the statement said.

BEIJING, Nov. 17 (Xinhua) -- China and the United States on Tuesday underlined in a joint statement their commitment to the eventual realization of a world free of nuclear weapons.    They also reiterated their opposition to the proliferation of weapons of mass destruction in the statement issued after talks between Chinese President Hu Jintao and visiting U.S. President Barack Obama.     The two sides will jointly uphold the international nuclear non-proliferation regime, and agreed to enhance non-proliferation cooperation on the basis of mutual respect and equality, the statement said.     They promised to work together for a successful Review Conference of Parties to the Treaty on the Non-Proliferation of Nuclear Weapons in 2010, and committed to pursue ratification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) as soon as possible.     The joint statement said the two countries stand ready to strengthen communication and cooperation in nuclear safety and security and in combating nuclear terrorism.     China attaches importance to the U.S. initiative to hold a nuclear security summit in April 2010 and will actively participate in the preparations for the summit, according to the joint statement.

WASHINGTON, Dec. 29 (Xinhua) --The U.S. Commerce Department said on Tuesday that it has set preliminary antidumping duties (AD)on imports of steel grating from China, a move that might escalate trade disputes between the two countries.     The department said it "preliminarily determined that Chinese producers/exporters have sold steel grating in the United States at 14.36 to 145.18 percent less than normal value."     As a result of this preliminary determination, Commerce will instruct U.S. Customs and Border Protection to collect a cash deposit or bond based on these preliminary rates.     The product covered by this investigation is a downstream steel product typically comprised of bearing and cross bars used for walkways, platforms and flooring.     From 2006 to 2008, imports of steel grating from China increased 538.44 percent by volume and were valued at an estimated90.7 million dollars in 2008, according to the U.S. Commerce Department.     Commerce said that it is currently scheduled to make its final determination in April 2010.     If Commerce makes an affirmative final determination, and the U.S. International Trade Commission makes an affirmative final determination that imports of steel grating from China materially injures, or threaten material injury to, the domestic industry, Commerce will issue an antidumping duty order.     The new case followed U.S. President Barack Obama's recent decision to impose punitive tariffs on all car and light truck tires from China for three years, a move quickly denounced by China as a "serious act of trade protectionism."     The protectionist moves by the Obama administration will ultimately hurt the U.S.-China trade relations, which are becoming more and more important due to the global financial crisis, economists warned.