Nanjing Blue Sky is an ISO9001:2000 and ISO14001 certified manufacturer with over 18 years experiences in a complete range of air filtering products, including the series of air filters & filter bags for household appliances, commercial appliances, industry machines, automobiles and special medical appliances etc. All our HEPA filters are produced in the strictly cleaning workshop. And we have the completed and advanced test labs to guarantee the high efficiency filters’ performance.
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