... -fixing 1,more than 10 years experiences on glass 2,Dockside warehouses 3,Top quality ... suppl Specifications High quality tempered glass, from 4mm to more than 25mm thick, with flat or curved ... process of quenching iron, heating up the glass to melting temperature point, and then cool it down ... stronger and more flexible. It is very hard to break a tempered glass, and when broken with strong force, ...