The magnet bar adopts a fully enclosed aluminum profile structure, completely isolating the magnets and yoke from the cooling water inside the target tube. This design helps prevent magnetic field changes caused by long-term corrosion from water exposure; The aluminum profile structure significantly enhances the rigidity of the magnet bar, reducing the risk of deformation and friction with the target tube, thereby ensuring more stable magnetic field performance. The magnetic field can also be adjusted more conveniently; The water outlet is designed to direct cooling water precisely toward the high-temperature area of the sputtering target, delivering better cooling performance. The structure also allows for easier installation and maintenance.