Dongguan Tongyu Optoelectronics Co., Ltd: Dongguan Tongyu Optoelectronics has been focusing on the R&D and production of touch screens for 10 years, specialized in 0.96-21.5 inch personalized smart industrial touch screen customization, applied to electronic products, industrial control equipment, medical equipment, smart home&home appliances, temperature controllers, security field, etc., customization of AG, AR, AF, PMMA cover lenses thickness of 4MM. China touch screen entity factory.