China Factory G4 Premium Washable Air Filter Pre Filter Roll Media
This exceptional series of filter media is expertly designed for pre-filtration or coarse filtration purposes. It is ideal for general ventilation systems and air control series inlets, especially in environments suffering from significant levels of pollution. By choosing this product, you ensure optimal performance in maintaining clean and healthy air.
Crafted with high-performance synthetic fibers, the gradient processing of this media ensures superior filtration efficiency and durability.
Available in various thicknesses: 5mm, 10mm, 15mm, and 20mm, this media is designed to meet diverse needs, with weights ranging from 380g, 400g, 500g to 600g, providing flexibility and reliability for different applications.
Materials: Constructed using anti-fractured PET organic synthetic fiber, this material offers exceptional strength and longevity, ensuring a reliable filtration solution.
Actual Size mm | Dust Holding Capacity m2 | Standard Size | Filtration class |
5 | 380 | 1*20m 2*20m 2*30m 2*50m | G2 |
10 | 400 | 1*20m 2*20m 2*30m 2*50m | G2 |
15 | 500 | 1*20m 2*20m 2*30m 2*50m | G3 |
20 | 600 | 1*20m 2*20m 2*30m 2*50m | G4 |


Boasting an impressive large dust capacity, our product offers minimal initial resistance, making it both economically savvy and incredibly practical for a wide range of applications.



Our facility boasts a spacious, state-of-the-art workshop that integrates primary, medium, and high-efficiency production areas. Additionally, we have a dedicated warehouse with a comprehensive stock of standard-sized materials, ensuring seamless inventory management.
APPLICATION:
Engineered to enhance air cleanliness in food and pharmaceutical spray workshops, these filters provide superior air purification for constant temperature and humidity air conditioning units. They are also essential for centralized ventilation systems in laminar flow purification operating rooms.

Our Mission:
At AILIN, also recognized as YIFAN, our core mission is to provide the finest quality products at the most competitive prices. We are committed to delivering an exceptional customer experience through a collaborative, win-win approach, ensuring satisfaction and success for all.
Getting to Our Factory:
• By High-Speed Rail: Reach us conveniently via high-speed rail to Zhengzhou for the trading arm at Ailin or to Xinxiang for the manufacturing hub at Yifan, both situated in Henan province.
• By Airplane: Arrive seamlessly at Zhengzhou Xinzheng International Airport, strategically located in Henan province, for easy access to our facilities.


A comprehensive range of filters: G-level pre-filters, F-level medium bag/pocket filters, H-level HEPA filters, and U-level ULPA filters, along with an array of high-temperature air filters, oil filters, and water filters tailored for diverse needs.
Our products boast certifications such as SGS and ISO9001, affirming their quality and reliability. We proudly export to regions including Europe, North America, Southeast Asia, Africa, and beyond. Our unwavering commitment to excellence and exceptional after-sales service have solidified our esteemed reputation in the machinery industry.
WHY CHOOSE US ?
We encourage our customers to inquire freely and allow us to assist in resolving any concerns comprehensively.1. We meticulously select only the highest quality raw materials to ensure our products are durable and reliable, meeting your expectations.
2. Our innovative design team actively explores market trends to offer you distinctive and practical design solutions.
3. We maintain competitive pricing without compromising on quality, striving for your utmost satisfaction.
4. We prioritize your needs, ensuring the timely delivery of our products directly to your hands, enhancing your experience.
5. We provide personalized customization services to cater to your specific preferences and requirements.
6. Our team, equipped with extensive industry experience, is prepared to deliver expert advice and unwavering support for your endeavors.



Q1: Are you a factory or trading company?
A1: We are factory with rich experience in China, and our company has established since 2007.
Q2: Can the product be customized?
A2: Yes, both the product and the packaging can be customized.
Q3: Do you provide samples?
A3: Yes, free sample can be provided but customer needs to pay for the shipping costs.
Q4: How to pay?
Our company accepts various ways of payment, such as T/T , L/C etc.
Q5: How long is the delivery time?
A5: It depends on the order quantity. Usually it takes about 15 to 30 working days after receiving your deposit.
Q6: Do you arrange the shipment?
A6: Yes, our company can arrange the shipment to deliver the goods according to the client's customer's requirements.
Q7: What about the after-sales service?
A7:Our company is responsible for the supplied product ONLINE