In the process of purchasing and cooperating on automotive filters, what customers care about is not merely the price. For professional buyers, the core parameters of the filter are the key basis for judging whether the product is worth long-term cooperation. Understanding and clearly presenting these parameters not only helps improve communication efficiency but also enhances customers' trust in the supplier's professionalism.
Size and Fitment Parameters
This is the first and most fundamental concern of the customer.
Length/Width/height
Overall external dimensions
Installation position size
Height and width of the sealing strip
Whether the dimensions are accurate directly determines whether the product can be installed smoothly and whether there are any problems such as air leakage or abnormal noise.
For foreign trade clients, dimensional accuracy and consistency are the first threshold for screening suppliers.
Filtration Efficiency
Filtration efficiency is one of the core indicators for measuring the performance of filters. Customers usually care about:
Filterable particle size (Micron Rating)
The ability to intercept dust, pollen and particulate matter
Whether it complies with industry or internal customer standards
High filtration efficiency means better engine protection or cleaner air inside the vehicle, but it also requires reasonable control of airflow resistance.
Air Flow Resistance/Pressure Drop
The customer is very concerned about the balance between the filtration effect and the smooth air intake of the filter.
Excessive resistance → Affects engine performance or air conditioning volume
Low resistance → Insufficient filtering capacity
An excellent filter should strike a balance between high filtration efficiency and low resistance, which is also a manifestation of technical strength.
Filter Media Type
Different filter materials correspond to different markets and price ranges. Customers usually ask:
Ordinary non-woven fabric/synthetic fiber
Wood pulp paper/High-efficiency fiber
Activated carbon composite filter material (for air conditioning filters)
Does it support a multi-layer structure
The structure of the filter material determines the lifespan, stability and application scenarios of the filter.
Filter Area & Pleat Design parameters
This is a parameter that professional customers attach great importance to but ordinary buyers tend to overlook.
Number of folds
Pleat height and pleat spacing
Actual effective filtration area
The larger the filtration area, the better the service life and stability of the filter under the same conditions.
Sealing Performance
The sealing performance directly affects the actual filtration effect of the filter.
Sealing strip material (rubber/PU
Height and elasticity of the sealing strip
Is there a risk of bypass leakage
Even if the filter material is of the best quality, poor sealing can still cause unfiltered air to enter the system.
Service Life
Customers will be concerned about the performance of the filter under normal operating conditions:
Recommended replacement cycle
Dust holding capacity
Performance degradation rate
The service life is closely related to the quality of the filter material, the filtration area and the structural stability.
Production Consistency & Stability
This is particularly important for bulk purchasing customers.
Whether the sizes of different batches are consistent
Whether the filtration performance is stable
Whether the appearance and structure are unified
Stable product quality means lower after-sales risks and higher market controllability.
The parameters of filters that customers truly care about cover multiple aspects such as size, performance, structure, stability and supply capacity.
Presenting these parameters clearly and professionally can not only reduce communication costs but also effectively avoid simple price competition.
For filter manufacturers, clearly stating the parameters is itself a form of competitiveness.
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.
