▎ 摘　　要

NOVELTY - Plating solution comprises 40-70 g/liter stannous sulfate, 70-100 g/liter sulfuric acid, 3.5-4.5 g/liter surfactant, 5-15 ml/liter SS-920 acid tin bright agent, 1-5 g/liter nano-graphene and water. USE - The plating solution is useful for cable conductor (claimed). ADVANTAGE - The plating solution: has utilization rate of the material tin for more than 90% and improves corrosion resistance of the copper wire. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for plating copper wire of cable using plating solution, comprising (i) treating copper with 20% sulfuric acid solution to remove impurities e.g. oxide layer on the surface of the copper wire; (ii) introducing copper wire into the tin plating bath comprising plating solution carrying out plating process at current density 6A/dm2 at 10-20 degrees C and copper conductor transmission speed is 10-20 meter/minute; (iii) recycling scraping solution to recover tin; (iv) cleaning with running water, hot water scalding or by steam cleaning; and (v) drying using hot air.