China Cheap price Active Carbon Air Filter - K2841 diesel engine air filter air filter for China trucks – MILESTONE

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Q1.Why are my air filters so dirty?
One-inch pleated filters quickly get dirty because they’re designed to catch more airborne contaminants. Think of 1-inch pleated air filters as a fine fish net with a very small gaps: it catches everything from big to small fish, but that also means the net fills up with fish faster (say that 3 times fast)

Q2.Do air filters work better when dirty?
The particle catching efficiency actually goes up as the filter gets dirty; buildup on the fibers shrinks the openings the air passes through and allows the filter to capture more particles. This is good only up to a point. … The denser the filter, the harder the system has to work to pull in air.

Q3.Air Filter Appears Dirty.
A clean air filter appears white or off-white in color, but as it accumulates dust and dirt, it will look darker in color. However, very often, the inner layers of filter paper

Q4. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q5. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.inside the air filter might have dust and debris that is not visible even in bright light.