The visual obstacle by gap joint of pieces of bent / tempered glass of general specification is removed for bent / tempered glass with extra big width and curve length to realize the ideal design of curved glass with extra big span for sightseeing balcony and elevator 超宽、超弧长弯钢化玻璃消除了普通规格弯钢化玻璃拼缝对人的视觉障碍,使观景阳台、观光电梯等圆弧玻璃超大跨度的理想设计成为现实。