... in high temperature and has strong hardness,and have the function of uvioresistant.The light transmission are above 90%.Borosilicate float ... application in lighting,chemical,fireplace,steel,food-machinery,solar energy,optical,semi conductor technology,petroleum and sight glass under high ... 4,5,6,8,10,12,15,20,25,30,50mm.Also we can print them with different colour. borofloat optical lenses with high ...