Dontech is an AS9100D and ISO-9001:2015 certified designer and manufacturer of optical filters, coatings and assembly compone ... nts which enhance the optical properties and environmental durability of the high-performance display and precision optical assembly markets. Since 1971, we have designed and manufactured custom optical components to service the demanding needs of our military, avionic, medical and industrial display and precision optical assembly customers. The company's headquarters is located in the United States at 700 Airport Boulevard in Doylestown, Pennsylvania. read more