Clock jitter cleaners and synchronizers are not a specific brand but a category of electronic devices used in various industries to improve clock signal quality and synchronization. These devices are produced by multiple companies worldwide, such as Texas Instruments (USA), Microchip Technology (USA), and Renesas Electronics (Japan). They serve industries like telecommunications, data centers, and industrial automation, offering products like phase-locked loops (PLLs), clock generators, and jitter attenuators to ensure precise timing and reduce signal noise in electronic systems.