Mtron (also known as M-tron Industries, formerly MtronPTI) is a company that offers precision frequency control and spectrum control solutions. Its products include RF, microwave, and millimeter wave filters, cavities, crystals, ceramics, lumped elements, and switched filters, as well as low-jitter and harsh-environment oscillators, crystal resonators, etc. The company caters to space, avionics, instrumentation, and other markets.