... . Professional and experienced team Specifications High quality tempered glass, from 4mm to more than 25mm thick, with flat or curved shape. ... like the process of quenching iron, heating up the glass to melting temperature point, and then cool it down rapidly, ... regards.EllaLidu Glass Machine CO.,LTDwebsite:www.liduglass.com 4mm to 19mm(Clear,Tinted,Reflective,Laminated,Tempered,Patterned)Curtain Wall ...