Small refraction is divided into 8, 12, 17, 19, 24 and 48 channels, which can be customized tap, generally for plug type wide and narrow clip, as well as waterproof tap, muller tap (nickel wire winding), banana pin, and other customizable. The distance of several meters needs to be customized.

Microlog line/408UL, WPSR/428XL, ST+, WPSR/408ULS/508XT/ARIES/G3I/V8 transient transmission line/crossover line/water-blocking shielded cable/optical fiber transmission network crossover line/geophone line/submarine cable/small refraction cable/special cable for oil data transmission, as well as petroleum instruments, instruments, seismographs, various cable connectors, marine seismic cables, cable passing bands.