Through chemically coated ni-p-mixed plating and subsequent heat treatment, zhengzhou plating pads of plating of plating of plating of plumes with high hardness and even distribution of plumes have been obtained, and the plating of plating is semi-naked. When such friction pads are placed between the cam and gear gears and gears, bolts and axes, the diamond particles on the friction pads will automatically be embedded in the opposite side, forming micro-locks, thereby enhancing friction and increasing the intensity of connectivity。