Time-frequency division, which attached to the Hebei Far-East Communication System, was established in the 1990's(Shor for TFD Below)

TFD targeting at middle and high grade time time-frequency component, relying on R&D strength, Frontier technology and excellent product.

TFD expertise include quartz crystal resonator, AT cut and SC cut high precision OCXO, high-grade VCXO and TCXO.