Quality comes first; service is foremost; business is cooperation" is our business philosophy which is constantly observed and pursued by our company for Bacterial viral filter for respiratory systems, Filter Disk , Ch4 Gas Sensor , Sintered Bronze Filter Discs ,Sintered Filter Elements . We have now ISO 9001 Certification and qualified this item .in excess of 16 years experiences in manufacturing and designing, so our items featured with best quality and competitive selling price. Welcome cooperation with us! The product will supply to all over the world, such as Europe, America, Australia,Cologne , Turkey ,Vietnam , Johannesburg .Establish long term and win-win business relationships with all our customers, share the success and enjoy the happiness of spreading our products to the world together. Trust us and you will gain more. Please feel free to contact us for more information, we assure you of our best attention at all times.