In order to timely and accurately control the filtration performance and dust-holding capacity of air filter paper, improve the research and development efficiency and level of air filter paper, and further improve the ability to serve customers. Longde introduced a TOPAS filter media test bench from German TOPAS GmbH.

TOPAS filter media test bench is not only used for ISO501 to test the filtration efficiency and dust-holding capacity of single sheets of paper, but also for ISO16890 (HVAC industry) to test filtration efficiency. It can provide data support for customers' filter matching filter materials, and can accurately develop products according to customers' different needs, thereby strengthening close collaboration with customers and providing customers with better products and services.