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Optimizing design is the basic method to improve performance of crushers. For many years, Daswell Machinery has been focused on research and production of crushing equipment, ore dressing equipment, sand making equipment and powder making equipment. While opening up domestic and foreign markets, Daswell Machinery tightly grasps opportunities and lays emphasis on brand building to comprehensively improve technical level of crushers. Henan Daswell Machinery is a professional manufacturer of mining machine for almost 30 years in China. We are dedicated to supplying our customers with best service and products, our major products include:portable crusher,If you are interested in our products, please contact us freely: sales@daswell.com In order to improve performance and increase working efficiency of roller crusher, Daswell Machinery optimizes design of roller crushers by increasing swing times of movable jaw to increase output and realize adjustment of discharge opening and hydraulic overload protection. Daswell roller crushers introduces domestic and foreign advanced production technology, which is of energy conservation, environmental protection, higher quality and so on, which is well received by a variety of customers and sells well at home and abroad.  Developing and growing processes of mining machinery industry restricts future development of crusher industry in China. Crusher is a kind of mechanical equipment widely used in mining machinery industry. Crusher in China is developed on the basis of introducing and improving foreign crushers, which has the features of simple structure, easy manufacturing, reliable work small crusher, convenient maintenance and so on, and which is widely used in metallurgy, mine, building materials, chemistry, coal and other industries.