Besides standard windows, Foctek offers all kinds of custom-made windows according to customers’ requirement:

● Windows made from materials such as N-BK7, Fused Silica, Sapphire, CaF2, Silicon, Borofloat, Pyrex, or other optical glass supplied by Schott and Chinese CDGM are available upon request.
● Windows at any size is available upon request. 
● Windows at shape of round, quadrate, triangular or other polygonal are available upon request. 
● Windows with single-layer or multip-layer AR, HR, PR coatings are available upon request.

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