1, the screen surface having a regular arrangement and the shape, the same size of the surface pores. 2, sieve sieve sieve surface mounted box for screening devices. 3, a pilot test sieve sieve sieve conform standard specifications for materials used to treat sieve size analysis. 4, test sieve sieve set in accordance with the provisions of the cover, splice tray assembly of a group of five test sieves, test sieve designated qualified institutional inspection, verification, test sieve considered conforming. Test sieve is a more sophisticated equipment test sieves, are widely used in laboratories, quality inspection departments room granules, powder-like substance particle size distribution measurement, determination of impurities in the product standard test sieves, liquid solids content analysis. Test sieves with new dedicated power generator, producing multi-frequency vibration, efficient sieve sample standard sieve to ensure accuracy, installation of electronic delay supplier of test sieves, sieving time can be set arbitrarily, with low noise, efficiency high precision, while according to the different materials to achieve different working hours by the manufacturer of electronic test sieves delay to minimize test error, sample analysis data to ensure consistency of product quality to make an accurate judgment . Test sieves supplier, Oswald Chen Machinery (certified), Jiangsu test sieves by Oswald Chen Xinxiang Machinery Co., Ltd .. Oswald Chen Xinxiang Machinery Co., Ltd. (www.oweicjx.com) is an industry leader in Henan Xinxiang, transportation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Oswald Chen mechanical leadership with the staff warmly welcome all inquiries negotiations to create Oswald Chen mechanical better future.