Nanjing Blue Sky Filter Co., Ltd. Began to expand the filter products to the worldwide market in the year of 2009. Nanjing Blue Sky is an ISO9001 and lSO14001 certified manufacturer with over 15 years experience in a full range of filtering products, including both the air filters and water filters. Nanjing Blue Sky is rated as a national high-tech enterprise, obtained a number of patents and quality inspection reports. Multiple quality inspection equipments ensure each product meets the national standards, and the exported filtering products meet the standards of Europeand the United States, such as EN779 and EN1822 and ASHRAE Standard etc. Blue Sky Filter can produce various filtration products according to the customers' specifications and requirements. The products accord with RoHS standards to be safe and environment friendly. Blue Sky Filter has the modern standard workshops, the advanced auto-producing facilities, the reasonable designed production lines, the strict quality control and management system to provide the customers with the premium products and service. All HEPA filters are produced in the strictly dust-free workshop. And there is the advanced test lab to guarantee the high efficiency filters' performance. With the excellent teams of highly trained and qualified engineers and marketing & customer service persons, Blue Sky Filter is able to provide filtering products and designs and integration services to the customers around the world. Blue Sky Filter is confident to work with the customers to create competitive advantages with the producing ability and experiences in the field. Meanwhile, Blue Sky Filter's professional export and logistics experience can deliver the goods to the customer's appointed location in the world. Feel welcome to review our product range and contact us!