RPR (Resilient Packet Ring), iFDR (industrial Fiber Data Ring), CWDM (Coarse Wavelength Division Multiplexing), Management Suit of O/E Converter, 10/100/1000M auto-negotiation O/E Converters, Single Fiber Bi-direction O/E converter, TDMoP ( Packet circuit emulated equipment). MQTs products are widely applied to Telecom operators, CA-TV, Architecture, Rail System, education, and so on.