The raw materials for production consist of natural ores-such as quartz sand and dolomite-and chemical substances, including soda ash and borax; these materials are melted into molten glass in a furnace at temperatures exceeding 1450°C.
The manufacturing process employs the centrifugal spinning method: the molten glass is passed through a high-speed rotating centrifuge to form fiber bundles, which are then sprayed with a phenolic resin binder and subsequently heat-pressed to cure and take shape.
The diameter of the fibers is controlled to within 8 μm, and by adjusting the centrifuge's rotational speed, a three-dimensional cross-linked structure of varying densities can be achieved.