Quartz plate/quartz sheet

our company could supply all kinds of optical windows.drug high temperature and pressure observation window.and all kinds of quartz glassess,like ultraviolet rays,infrared ray. (1) quartz glass plate (2) drug high temperature and pressure observation window (3) milky white quartz plate size (max:mm) 1. polished quartz glass square chip( 600*600) 2. polished quartz glass waferΦ400 3. milky white quartz glass square chip (400*500) 4. milky white quartz glass waferΦ500 remind that the thickness according to our customers demands further information