Zhengzhou Deao Science &Technology  Co., Ltd. is the leader of China's screen changer industry, the boss Zhenbao Wang is the earliest researcher and inventor of Chinese screen changer.

 From the first screen changer sample come out at 1989, 1991 test successfully , till now has already goes across 28 years, 28 years continuous innovation , and constantly struggle. At present already has a honor of 6 national invention patents , 13 utility model patents, the United States patent,  EU patent, also adopted the CE certification, SGS certification. Products from the plate type quick changing screen changer  to the plate continuous screen changer, single and double pillar continuous screen changer, double pillar large area wrap screen  screen changer, back flush, automatic mesh belt. 2000 - 2013 by customized for customers ,we invented the long mesh belt changer, plate type back washing screen changer, pressure stable screen changer etc.,only our can make it in domestic,other company still don’t have.In 2016, for the request of customer, we developed of China's largest double-column screen changer, output up to 6 tons per hour. Till now, the products have been exported to the Americas, Africa, the Middle East, Western Europe, Southeast Asia, 72 countries. A series of success  havn’t  let us stop, no conceited, always keep modest, advancing with the times, create a more brilliant future is our aim.At 2017 ,we are going to to pass one invention patent,  3 utility invention patents ,output value will over 20 Million .At the same time we have go abroad, to participate in the German K show, India exhibition, Vietnam exhibition etc.  international large-scale exhibition, and constantly open up.

    New period, new mission, customer require for seal better, more automated, higher output screen changer. We will be closely linked to customer needs,deepen technical research and development，increase the after-sale service system investment, to lead the entire plastic filter industry to a new height.To create a bigger contribution for China and the world  filtration career.