... and experienced team Specifications High quality tempered glass, from 4mm to more than 25mm thick, with flat or curved shape. ... . 2) Optical Distortion: heating process may also cause internal change of the glass structure, and may cause optical distortion, that ... .EllaLidu Glass Machine CO.,LTDwebsite:www.liduglass.com 4mm to 19mm(Clear,Tinted,Reflective,Laminated,Tempered,Patterned)Curtain Wall ...