8504408800 under HS Code Others, 8504408400 under HS Code Others, and 9030400000 under HS Code OSCILLOSCOPES, SPECTRUM ANALYSERS AND OTHER INSTRUMENTS AND APPARATUS FOR MEASURING OR CHECKING ELECTRICAL QUANTITIES, EXCLUDING METERS OF HEADING 9028; INSTRUMENTS AND APPARATUS FOR MEASURING OR DETECTING ALPHA, BETA, GAMMA, X-RAY, COSMIC OR OTHER IONISING RADIATIONS OTHER INSTRUMENTS AND APPARATUS, SPECIALLY DESIGNED FOR TELECOMMUNICATIONS (FOR EXAMPLE, CROSS-TALK METERS, GAIN MEASURING INSTRUMENTS, DISTORTION FACTOR METERS, PSOPHOMETERS) were the top imported HS Codes by A RUSTEL JSC in 2021.