Crane manufacturing industry is closely related to urban construction, transportation, energy development and other people's livelihood cause of the industry. In recent years, China's crane industry has achieved rapid development. To bridge gantry crane manufacturing company, for example, to 2008, China's bridge gantry crane has about 450 manufacturing enterprises, employing over 14 million people [1]. If these enterprises are divided into three echelons: big play, too heavy in the first electric stacker, they are the industry's largest economy enterprises, with national technical center, comprehensive strength, in order to produce high-end products, such as nuclear ring cranes, large weight metallurgical cranes, foundry cranes, large dock cranes, etc.; second tier that includes Weihua Group, including China's top 20 companies, most of them have plant-level technology center, which is the establishment of Weihua Group regional technology center in Shanghai set up a product design and Research Institute, Small and medium enterprise development crane road
Chinese crane manufacturing industry is quietly brewing a major change, which is like a war of no smoke, had undergone a simmering after some companies with wave away, some will be the foundation of strike in prison .
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