1. In terms of performance:

　　The comparison of parameters such as accuracy, flow rate, permeability pressure difference, and filtration efficiency has been tested and verified, and imported fiberglass is far superior to domestic fiberglass.

　　2. In terms of price:

　　Domestic fiberglass costs around 70 yuan per kilogram, while imported fiberglass costs around 300 yuan per kilogram.

　　3. From a structural perspective:

　　Imported fiberglass is extracted from pure fiberglass and has a fragile texture, so a layer of tea oil paper is added inside and outside, which makes the color a bit yellow. Domestic fiberglass is artificially synthesized and relatively white.

　　4. In terms of appearance:

　　Imported glass fiber: It is composed of two layers of non-woven fabric and one layer of glass fiber filament, with clear layers. The filter layer is thin and easy to break water pockets in the oil, and the accuracy is generally 1-25 microns

　　Domestic glass fiber: It is composed of two layers of non-woven fabric and three layers of glass fiber filaments, with unclear layers. The thickness of the filter layer is not easy to break water pockets in the oil, and the accuracy is generally between 1-100 micrometers

　　So when you purchase a fiberglass filter, you must distinguish between domestic fiberglass and imported fiberglass!

　　The main brands of imported fiberglass include: HV from the United States, Rand from Germany, etc

　　The main brands of domestically produced fiberglass include: Nanjing Fiberglass Institute and Chongqing Recycling, etc