产品致密性好，纯度高，刚玉相大于９９％，对玻璃液具有很好的抗侵蚀性，主要用于玻璃窑炉高温部位和玻璃液侵蚀严重的部位。用于日用玻璃窑炉的供料道，可以防止玻璃制品中条纹、结石以及气泡的产生，提高产品内在质量和产品合格率。

The product has good compactness, high purity, the corundum is more than 99%0,and has good corrosion resistance to the glass liquid. It is mainly used in the high temperature parts of glass kiln and the serious site of glass liquid erosion. The feed channel used in the daily use glass kiln can prevent the production of stripes, stones and bubbles in the glass products, and improve the internal quality of the products and the rate of product qualification.