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Strict Testing Standards Ensure Stable Performance of Export-Grade Air Filters

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  • 2026-10-14

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All our automotive air filters are produced in accordance with international export standards, and every product has passed professional and standardized performance tests to ensure stable and reliable quality in overseas market sales and vehicle application.

First of all, the raw material incoming test. All filter paper, non-woven fabrics, rubber frames and adhesives are tested for air permeability, tensile strength, aging resistance and high temperature resistance to ensure that the raw materials meet export grade standards and eliminate inferior materials from the source.

Secondly, semi-finished product process inspection. In each link of folding, gluing, forming and assembly, professional inspectors conduct real-time monitoring to ensure uniform product specifications, firm bonding and standard overall structure, avoiding defective products caused by process errors.

Finally, finished product performance test. We conduct filtration efficiency test, dust holding capacity test, air tightness test, pressure resistance test and high and low temperature cycle aging test for finished air filters. All products with unqualified filtration precision, excessive air resistance, poor sealing and easy deformation will be eliminated.

Before shipment of export orders, we will conduct secondary manual inspection and appearance sorting to ensure perfect product appearance, standard packaging and complete labels. Strict multi-dimensional testing system ensures that our air filter products can adapt to various complex overseas road environments and vehicle working conditions, and maintain long-term stable high-quality performance.

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Strict Testing Standards Ensure Stable Performance of Export-Grade Air Filters
Dong Sen Filters

Qinghe County Dongsen Auto Parts Co., Ltd. is located in Qinghe County, Xingtai City, Hebei Province. It was established in 2024. Although the company was established a short time ago, it has more than 10 years of production experience. We are a manufacturer specializing in the production of air filters, air conditioning filters and oil filters. The filters produced by our factory serve the domestic and foreign markets and have won unanimous praise from customers in Southeast Asia, Africa, South America and other regions.