Quantum CTEK Co Ltd is a Chinese-based company engaged in the research and development, production and sales of quantum communication relevant products and related technical services. Quantum communication products include core equipment for quantum secure communication networks, quantum security application products, core components, and control software for quantum secure communication networks, quantum secure communication network operation and maintenance services, and related technical services for quantum security applications. Quantum computing products include superconducting quantum computer complete machines and control systems, dilution refrigerators and other core components, and quantum computing-related technical services. Quantum precision measurement products include cold atom gravimeters, femtosecond laser frequency combs, single-photon imaging and other equipment, and components such as optical sensors and single-photon detectors and related technical services.