Quartz Furnace tubes are made from high-purity quartz sand. They are resistant to high temperatures (up to 1200℃ or higher), have good thermal stability and strong chemical inertness. They are widely used in high-temperature heat treatment in fields such as semiconductors, photovoltaics, and new materials, and are the core components https://www.dnquartz.com/quartz-furnace-tube-product/