Blue Sky Filter is a professional air filter supplier and car air filter manufacturer in China since 2009.

How long is the warranty period of air purification filters?
A warranty provided by Nanjing Blue Sky Filter Co.,Ltd. deals with product defects in materials and workmanship from the original date of purchase from our factory. Its coverage can last up to several years, although the length of the coverage varies from product to product. So for how long we will be held accountable for a specific product, please contact Customer Service. For those products that are intended to last a long time, we usually consider offering longer warranty periods, provided that the quality of these products should be improved and the failure rate is controlled during the specified time.
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Blue Sky is an expert in designing, developing and manufacturing refrigerators parts. Since our establishment a few years ago, we have enjoyed a reputation as a reliable company. According to the material, Blue Sky's products are divided into several categories, and hvac filters is one of them. Blue Sky brush for vacuum cleaner is developed with pretreatment, refined filtration, cleaning and sterilization systems. The R&D team strives to achieve the best water treatment effect by improving its systems. Strict internal quality control system to ensure that products meet international standards.
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We have devoted philanthropic efforts to help the environment. We initiate voluntary activities, such as clean the beach and recycle bottles and paper, aiming to reduce the negative impact on the environment.

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