QuantumCTek(688027.SH)

QuantumCTek Co., Ltd., together with its subsidiaries, engages in the research, development, production, and sale of quantum communication, computing, and measurement products in China. The company offers quantum-secure communication network core equipment, including MAN and BN QKD, portable ground station for satellite QKD, channel and key network switching, and fixed network encryption application products; and quantum-secure application products, such as quantum security services mobile engine, quantumbuds, quantummail, quantum meeting, quantum identity security system, qukey, qtcard, quantum security intelligent office books, and quantum security HD walkie-talkie. It also provides operating system software comprising Guo-Dun quantum-secure communication network management system and Guo-Dun network operation and maintenance system; quantum computer products, which include ezq-fridge, superconducting quantum computing cable components, Josephson impedance gradient parametric amplifier, ruthenium oxide thermometer, and extremely low temperature and low noise platform; and optoelectronic products, such as detectors, light sources, and random numbers. In addition, the company offers teaching systems and scientific instruments; and quantum precision measurement products comprising single photon imaging, cold atomic gravimeter, and femtosecond laser frequency comb.