With the development of economy and the improvement of social living standards, vacuum coating technology is used in more and more fields. At present, quartz crystal oscillation monitoring method and optical film thickness monitoring method are used to monitor the deposited film thickness. Over the years, ofel has been committed to the R & D and production of optical films. He has summarized some experience and made continuous improvement in the research, production and use of crystal oscillator, the core component of quartz crystal oscillation monitoring method.

High quality quartz crystal oscillator makes high-quality film. The oufel quartz crystal oscillator is of first-class quality and reliable use. 100% testing and inspection ensure the stability of starting frequency and accurate thickness measurement. In order to improve the service life and stability of the crystal oscillator, check the electrode consistency and surface defects for each crystal oscillator to ensure that there are no defects.