Optical Window, Optical Lens, Optical Filter manufacturer / supplier in China, offering IR Material 90mm Zinc Sulfide ZnS windows for IR Thermal Imaging, Remote measurement, Monitoring, Nikoplex/Vplex reticle (anti-reflective coated reticle with etching depth 0.025mm without breakpoint or paint leakage), High Precision Optical RA Prism for a Reflector and so on.