Cyber surveillanceSwelasers solution helps to protect the optical fiber cables. Our solution is named CSAPP Fiber opticsFiber optics is everything from transcievers like SFP, XFP, patches, cleaning equipment to test equipment TransmissionTransmission equipment may be all equipment that work under OS-layer 2. It is roughly divided into two categories: Passive that require no current and Active that require electricity Latest news Swelasers new address Active DWDM Transmission system Welcome to our Seminar Foreign establishment ROADM 2x 20 WSS