PTC optics specializes in optical inspection and measurement solutions, involving glass, optical film, flat panel display, PCB and more industries. from the first day of establishment, independent innovation has always been our top priority. after years of research and practice, we have successfully developed well received products, such as Surface stress meter, Polariscope and AOI machine. Our mission is to continuously develop the most advanced optical equipment for manufacturers, laboratories, measurement centers and research institutions around the world.