Newly developed complete unit PU filter in our company is a breakthrough in filtering industry. The filter is adopted with the most advanced technology in the world and it is not necessary to cut and assemble into complete filter, all of which will help increasing working efficiency at a certain degree. Compared with the traditional bag filters, it has the following features: Automatically production, complete unit all at once, well-sealant; High-rigid frame which is much stiffer than plastic and it even equals to metal frame. Filter efficiency is from G3 to F7 (CEN-EN779: 2002), which can meet the installation requirement from clients.