About Seller: Since 1958, Crystek Corporation� has been a leading provider of frequency products, offering quartz crystals, XOs (clock oscillators), TCXOs (temperature compensated crystal oscillators), VCOs (voltage controlled oscillators), and VCXOs (voltage controlled crystal oscillators). 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.