1. Utilizing high-power salt bath quenching technology to treat the pointed end, ensuring complete consistency in internal and external hardness (quenching depth is more than 7 times that of high-frequency quenching), with excellent performance. In contrast, the quenching depth of ordinary vibration rods is only 1.5-2mm, which is considered surface quenching. The rolling cone is made of 40Cr steel, subjected to deep quenching and grinding, resulting in a long service life.

2. Employing a complex and costly box-type tempering process to eliminate internal stress in the flexible shaft, significantly improving its bending stiffness and torsional flexibility compared to other similar products, ensuring that the hose remains intact without loosening when cut short.

3. Requiring the tensile strength of the outer rubber layer of the hose to be no less than 8MPa, and the inner layer no less than 5MPa, ensuring both the strength and comfort of the hose. Ordinary hoses typically achieve only half of these indicators.