Ultra-white glass is ultra-clear, low-iron glass. This high-quality, multifunctional material has light transmittance above 91.5 % and a crystal-clear, elegant appearance, earning it the nickname “Crystal Prince” of the glass family. Producers include PPG in the United States, Saint-Gobain in France, Pilkington in the United Kingdom, Asahi in Japan, and 中国南玻, 台玻, and Xinyi Group. Xiangjie also produces ultra-white U-shaped glass in accordance with the European EN 572-1 glass standard. Each pane of true ultra-white glass should have light transmittance above 91 %, while some smaller domestic manufacturers do not meet the 91 % requirement. The iron content of each pane should be below 0.03 %, a requirement that some domestic companies do not meet. These factors should be considered when choosing ultra-white U-shaped glass. The production line uses new melting and forming technology and an advanced rolled-glass process. A reliable choice for ultra-white glass.