Our Diameter 400mm-2000mm -typed series sifters made of quality stainless steal can be installed four layers of sifters at most which you may get the details from http://2386.weebly.com . Their electromotor can vibrate steadily and produce great vibration strength. The flexible net frames are easy to stretch completely and replace in a very short time so that their efficiency is raised greatly. Therefore, their advantages of quick replacement, light weight and flexibility. They may use for Foods, Pharms, Chemicals, Metallurgy, Alloys, Ore, Rubber, and other filtering products to be needed! However, you may get the Video of working for our Sieve from http://www.ecplaza.net/videos/7758-vibration-screens-5-layers or http://www.ecplaza.net/videos/7757-vibration-screens-1-layers which it is actual sieving the products!