Scientific devices, apparatus and instruments, namely, cryostats and cryogenic parts; scientific devices, apparatus and instruments, namely, cryostats and cryogenic parts; teaching devices, apparatus and instruments, namely, cryostats and cryogenic parts; measuring devices, apparatus and instruments, namely, cryostats and cryogenic parts; test and monitoring devices, namely, probes for testing integrated circuits and quantum electronic devices; calibration devices, apparatus and instruments, ...