Foreword:
Thank you for your interest in advance!
It has been 16+ years since we processed the first HVAC air filter.
You can find various replaceable filters for Camfil, AAF etc. We have all kinds of frames and filter media available. As for prefilter and secondary filters, we buy the filter media of optimum quality from Chinese native market. Their quality is stable and super. As for the HEPA filters, the glassfiber media is from American Lydall and Suzhou H&V. We control the quality from the source.  
There are plenty of testing machines in our laboratory including filter media testing and completed filters tested.  
Welcome to have a Virtual tour to our factory by clicking the following:

 

HEPA Filter for Ventilation and Air Conditioning System,Cleaning Room

>Structure:
>Feature:
1. Homogeneous filter media velocity coupled with low pressure drop
2. Large surface area and high dust holding capacity
3. Cost-efficient and dependable operation
4. Light weight and easy to install
5. Each filter element is tested for leakproofing before market release
 
>Application:
1. Highly sensitive industrial processes (pharmaceuticals, biotechnology, chemicals, food and beverages, optics, micro-electronics, etc.)
2. Sophisticated air-conditioning systems (theaters/intensive care units in hospitals and medical institutes, sterile rooms, labs, research centers, etc)
 
>Technical data:
1. H11/H13/H14/U15/U16 EN1822; DOP 99%@0.3micron, 99.99%@0.3micron, 99.999%@0.3micron, 99.9997%@0.12micron, 
2. Recommended final pressure drop: 2-3 times initial pressure drop
3. DIN 53438 Flammability: F1
4. UL 900 Standard: Class 2
5. Thermal Stability: 70celsius
6. Moisture Resistance: 100% RH
 
>Sample data:
HEPA data 1
ULPA data 2