Identification of high quality glass rod

The quality of glass rod currently sold on the market varies. How can consumers identify them? Here are a few main methods:

1. Chemical coating is the key
The external color of high-quality glass rod has a certain glossiness and a certain beige in the white, which is the true nature of chemical coating. Pure white or other colors indicate that there are a large number of other substances involved in the chemical coating or the glue rate is too low, which will affect the alkali resistance of the glass rod. European high-end glass rod will sparkle under the sun. This is the best among glass rod.
2. The quality of fiberglass yarn is extremely important
The surface of the glass rod produced by high-quality fiberglass yarn is very clean, basically free of lint, flower balls or other quality spots. The warp and weft yarns are evenly woven and the cloth surface is straight. There are still a large number of clay yarns that are banned by the state in China. The raw materials are made of pure glass. The products have low breaking strength, poor alkali resistance, short lifespan, and pose great safety risks.
3. Feel
High-quality glass rod, thick to the touch, flexible (rather than stiff) and smooth (rather than rough).