Nanjing Blue Sky Filter successfully attended IFA 2025 in Germany, Saudi Infrastructure Expo 2025, and Global Sources Electronics 2025 in Indonesia. We met partners from all over the world and showcased our latest filtration products, including vacuum cleaner filters, air purifier filters, automotive filters, and HVAC filters. As a professional OEM/ODM filter manufacturer, we’re proud to share innovative filtration solutions and build strong global partnerships.

Discover how indoor air filters improve air quality by blocking outdoor dust, pollen, and allergens. Shop high-performance, customizable air filters at Blue Sky Filter.

Nanjing Blue Sky Filter is a leading manufacturer specializing in high-quality filter solutions for various industries. With over 15 years of experiences, we provide a comprehensive range of filters for automotive, HVAC systems, home appliances etc. Our products are designed to meet rigorous demands of performance, durability, and efficiency.

Nanjing Blue Sky Filter will exhibit at the CHINA (DUBAI) EXPORT BRAND JOINT EXPO from Dec 17–19. Explore OEM/ODM HVAC filters, home appliance filters, and automotive filter solutions for global wholesale buyers.

Nanjing Blue Sky Filter is a professional HVAC air filter manufacturer offering OEM/ODM custom filters, vacuum filters, air purifier filters, automotive filters, and marine filters for global wholesale partners.
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<div>If you're looking for a reliable automotive filter supplier that can provide both standard and customized filter solutions, we are ready to assist your business.<br />
<br />
Contact us: sales@bluesky-filter.com<br />
Website: www.bluesky-filter.com</div>
</div>

Nanjing Blue Sky Filter is a professional HVAC air filter manufacturer offering OEM/ODM custom filters, vacuum filters, air purifier filters, automotive filters, and marine filters for global wholesale partners.
<div> 
<div>If you're looking for a reliable automotive filter supplier that can provide both standard and customized filter solutions, we are ready to assist your business.<br />
<br />
Contact us: sales@bluesky-filter.com<br />
Website: www.bluesky-filter.com</div>
</div>

Briefly describe how every year, before long holidays (such as Golden Week or year-end travel peaks), millions of vehicles hit the road.<br />
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Emphasize that vehicle maintenance—especially air, oil, and cabin filters—is often neglected but critical for road safety and performance.<br />
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Transition sentence: "Before setting off for a long drive, make sure your filters are as ready as you are."

This article mainly talks about&nbsp;What Is a MERV Rating?&nbsp;and Differences Between MERV 8, MERV 11 and MERV 13