The difference between domestic fiberglass and imported fiberglass. The quality of fiberglass filter materials

When customers purchase filter cartridges, manufacturers often say that there are domestic and imported filter materials. So, what is the difference between domestic and imported filter materials that makes the price difference so big?

In terms of performance, domestic fiberglass and imported fiberglass are not of the same level in terms of precision, flow rate, air permeability, pressure difference, filtration efficiency, and other parameters. Domestic fiberglass costs around 70 yuan per kilogram, while imported fiberglass costs around 300 yuan per kilogram.

Structurally speaking, imported fiberglass is extracted from pure fiberglass and has a fragile texture. Therefore, a layer of tea oil paper is added inside and outside, resulting in a slightly yellowish color. Domestic fiberglass is artificially synthesized.

Imported fiberglass from appearance: It is composed of two layers of non-woven fabric and one layer of fiberglass fibers stacked together, with clear layers and a thin filter layer that is easy to break open water pockets in the oil. The accuracy is generally around 125 microns

Domestic fiberglass: It is composed of two layers of non-woven fabric and three layers of glass fiber filaments stacked together, with unclear layers. The thickness of the filter layer is not easy to break open water pockets in the oil, and the accuracy is generally around 1100 microns

So when purchasing fiberglass filter cartridges, it is important to distinguish between domestically produced fiberglass and imported fiberglass, and buy genuine and cost-effective products.
The main brands of imported fiberglass include HV from the United States and Rand from Germany, while domestic brands include Nanjing Fiberglass Institute and Chongqing Recycling