Photon technology (Photec) provides the high-performance superconducting nanowire single photon detector (SNSPD). PHOTEC SNSPDs exhibit exceptional performance and have been widely applied in the fields of quantum communication, computating, LiDAR, and bioimaging, etc. The distinctive parameters of our SNSPD have received positive feedback from the market. For instance, our SNSPD with high detection efficiency up to 98% was used in the world's first experiment to verify the superiority of optical quantum computing. Our low DCR SNSPD, less than 0.02cps, was used in the 1000 km long-distance QKD experiment. Our large sensitive area SNSPD with multimode fiber coupling technology was applied in LiDAR system, and so on. PHOTEC also provide customized services for 0.3K-4.2K ccryostats and cryogenics accrssories, including Low temperature thermometer, temperature controller, RF coaxial cables and low temperature low noise amplifier.