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Designed by Shandong High Speed Croup, from the was were only available in December 2006 and finished in December 2010, after 14 years of planning researches since 1993, which employed 30,000 workers to develop, and used 450,000 tons of steel and a couple of.3 million cubic meters of concrete, using a total investment of approximately 9 billion yuan. The open from the bridge will decrease traffic time from Qingdao to Huangdao District by at least twenty minutes and release pressure about the Jiaozhou Bay Expressway. Furthermore, the Qingdao Haiwan Bridge will be the starting area of national expressway from Qingdao to Lanzhou and also the key part of high way net of Shandong.
World's longest over-water bridge, the 41.58km-long Qingdao Haiwan Bridge, opens to traffic in China's Qingdao on the last day of June. The bridge connects the city of Qingdao with Hongdao in Chengyang District along with the suburban Huangdao District over the waters with the northern a part of Jiaozhou Bay in Shandong Province.
Self-cleaning filter is a kind of using mesh directly to intercept the impurities in the water, purify water, suspended solids, particulate matter, reduce the turbidity, purify water quality, reduce system dirt, bacteria and algae, corrosion, etc, to purify the water quality and protect the system precision equipment of other equipment to work normally.
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