About HYG Optics The Haiyu Optics, founded in 2000, is focus on design and manufactured fiber optic communication products. It has developed a range of products including Indoor and outdoor optical cables, fiber optic jumpers, pigtails, connectors and adapters, network solution equipment like optic media converters, attenuators, tranceivers, optical models and other accessories. Widely used in telecom communication, mobile communication, network solution, radio and television, etc. HYG ...