Quartz crystal oscillator is a small active clock module with oscillator chip and quartz crystal. In the application of crystal resonators, it is usually necessary to test the actual load, negative impedance and excitation power of the circuit in order to select a suitable crystal resonator to match it. Quartz crystal oscillator oscillates IC and quartz crystal are built into the product, the above matching work is completed in our factory, customers only need to provide power supply voltage can obtain stable frequency source. HCI can provide a wide range of package sizes and frequency point, frequency difference and output types of products, widely used in communications, industrial control, IT, medical, precision instruments and military and other fields.