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 multiple-layer AR, HR, PR coatings are available upon request.