About Seller: Since 1958, Crystek Corporation® has specialized in providing a wide range of frequency products, including quartz crystals, XOs, TCXOs, VCOs, and VCXOs. The company operates two divisions focused on frequency control: Crystek Crystal, which specializes in developing and manufacturing frequency products utilizing quartz-based resonators, and Crystek Microwave, which develops frequency control and support products for the microwave industry.