Factory AUDI A8 4N Engine Air filter 4N0129620C 4N0129620 4N0129620B

 AUDI A8 4N Engine Air filter 4N0129620C 4N0129620 4N0129620B

Our Service:

1. We welcome OEM manufacturing partnerships, offering flexible customization across product specifications (e.g., filtration precision, size adaptation for specific models), packaging solutions (including brand-customized designs and export-grade protective packaging), and additional value-added services to align with your market needs and operational goals.
2. We provide samples of standard parts for pre-production validation, allowing you to verify critical attributes such as dimensional compatibility with your equipment, filtration performance, and material durability upfront—effectively reducing risks in mass production.
3. We guarantee a response to all your inquiries (including quotations, technical details, lead times, and customization requirements) within 24 working hours, ensuring timely communication to avoid delays in your procurement or project timelines.
4. After shipment, we will proactively share logistics updates (e.g., tracking numbers, transit locations, estimated delivery dates) every two days until you receive the goods. Upon receipt, please inspect the packaging for integrity, test the product’s functionality, and share your feedback—this helps us enhance our collaboration. If any issues arise (such as transit damage, performance discrepancies, or packaging defects), contact us immediately, and we will promptly provide targeted solutions (e.g., replacements, repairs, or technical support) to resolve them.

   

   

Quality Control

For Guangzhou Yuanzhuang Filter Co., Ltd., quality assurance serves as the cornerstone of our operations in the R&D, design, and production of filters for automotive, construction, and agricultural machinery. We clearly recognize that a filter’s filtration effectiveness and long-term durability are critical to sustaining the optimal performance and service life of the equipment it is integrated into. As such, we have developed and fully implemented a comprehensive, stringent quality control system—one that fully complies with the rigorous requirements of the IATF 16949 quality management system, an authoritative framework tailored specifically for the global automotive and heavy machinery supply chains.

Our  Promise: 

     We have consistently earned the trust of our customers by upholding rigorous quality standards, and an increasing number of overseas customers have also come to place their trust in us—your trust has always been, and will continue to be, a key driving force behind our ongoing progress; we sincerely welcome all our customers to share your valuable opinions and suggestions with us, and let us join hands to work together for mutual success!

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