The external surface of the piston rod is treated with advanced laser cladding. The cladding layer has a hardness exceeding HRC50, can withstand salt spray corrosion for more than 3,300 hours, and features outstanding wear resistance, greatly extending service life under harsh operating conditions. The inner surface of the outer cylinder is processed using a copper alloy cladding technique. The resulting coating exhibits high bonding strength and low friction coefficient, significantly improving the durability of seals and the smooth operation of the entire hydraulic system. In addition, the middle cylinder, plunger and other components are treated with copper-tin alloy plating, further enhancing corrosion resistance and wear performance. Through this complete remanufacturing system, we restore key components to better-than-new performance, providing customers with cost-effective and sustainable solutions.