🖍 At Derong, our team excels in air filter manufacturing, leveraging my background in IAQ consulting and filter media development to innovate and benchmark against top international quality systems. With a Master's degree from Beijing University of Technology, I channel a rigorous scientific approach into practical solutions that meet diverse needs.🖍 Our product range extends from residential to industrial applications, all rooted in robust research and development. We have established a reputation for quality, underscored by our adherence to US ASHRAE and Europe EN1882 standards, and have built a reliable network for overseas sourcing to support our global clientele.The products we supply mainly:✅ Air purifier filters✅ HVAC furnace filters✅ Bag pocket air filters (melt-blown PP synthetic media and microfiber fiberglass)✅ HEPA air filters✅ Activated carbon filters (coconut and coal based)✅ Pre filters (disposable and washable)✅ Deep pleated filters (box/ single header/ double/ high temperature resistance)✅ Mini pleated filters (fan filter unit/ FFU)✅ Cooker range hood grease filters (multi layer and baffle type)✅ Dust collector filters (cartridge and bags)✅ Ring panel and link filters✅ Grow tent carbon filters✅ Humidifier filters✅ Cold catalyst filters✅ Vacuum cleaner dust bags and accessories✅ Automotive sandwich activated carbon cabin filters🖍 We are also carrying awesome shipping resources for sea cargo, air cargo, and express from different cities and ports. FOB, CFR, CIF, DDU and DDP shipping terms are available. Our shipping brokers are reliable and were well-chosen by our team. They work as fast, honestly and professionally as our team.