The company uses a large calender forming machine to prepare the blank of powder felt filter material, which has the advantages of high production efficiency and few product defects. The billet is degreased and sintered at high temperature in a continuous sintering furnace to form a metallurgical combination, and then made into a filter cartridge by a gantry resistance welding machine to ensure the strength of the material. Finally, ZSWF-powder felt metal filter bag products are made by laser welding with flanges and hole pipes. At the same time, the company is equipped with laser cutting machines, CNC lathes and other processing methods to ensure that the dimensional accuracy and appearance of products meet the requirements.