Nanjing Blue Sky Filter Co.,LTD. established in 2009, is a professional manufacturer specialized in various air filters’ research, development, production, sales and service. We are located in Lishui economic development zone with convenient transportation access and the goods can be loaded for export at both Nanjing Port and Shanghai Port. Nanjing Blue Sky Filter Co.,Ltd. has obtained certificates of I S O 9 0 0 1 and I S O 1 4 0 0 1 to manage our operation in a scientific and standard way.