The gold solid rod heating element used in the inner tank of the Grimes water heater is the industry's first national invention patent for instant electric water heater heating element. Its service life is 5 times longer than that of ordinary heating tubes. It is the first of its kind. "Heating tube + superconducting alloy" integral die-cast structure, 360-degree all-round heating, large heat conduction area, thermal efficiency 98%, anti-scaling, anti-corrosion, anti-dry burning, breakdown resistance, thermal efficiency and other aspects are better than ordinary heating tubes performance.