... price & prompt delivery 3.used for optical instruments 4.best service Optical glass raw materialsLB series: LB1,LB2,LB3,LB4,LB5,LB6 ... ,LB12,LB13,LB14,LB15,LB16,LB7,LB18,LB19 1. available for OEM Orders2. high capacity production3. over 10 years experience4. ... and thickness.Any questions, feel free to contact us. LB series optical glass raw material for sale, glass manufacturing raw material.