Air purification filters is found to be compliant with various requirements of qualifications and certifications. Nanjing Blue Sky Filter Co.,Ltd. has been tested by major internationally authoritative institutions. This plays an important role in our advance towards the global markets as many foreign customers value much on the certifications. Since we are established, we have accumulated some knowledge about how to pass the tests specified in the certifications. The process is complicated and tedious, but what we have done all worths it. If customers want to have a look, please browse our official website.

Blue Sky is constantly putting efforts on the design and manufacture and becomes one of the most famous designers and manufacturers of air purification filters. According to the material, Blue Sky's products are divided into several categories, and humidifier filters is one of them. The quality of Blue Sky pleated panel air filters is strictly scrutinized to meet the standards required by the China machinery industry federation in regard to the mechanical seals. The product offers a great way to reduce carbon footprint. It consumes little energy, which can significantly reduce emissions contribution.

We have demonstrated sound environmental practices for many years. We have been focused on carbon footprint reductions and product end-of-life recycling.