Some aspects that need to be deeply studied on electroless gold plating for engineering plastics were put forward.

The working mechanism of vibration plating and the process flow and main points of each procedure of gold plating with vibration for stainless steel spring needles were introduced.

To study the effect of surface treatment such as titanium nitrogen(TiN) coating and gold-plating on corrosion resistant of Ni-Cr alloy and Ni-Cr Alloy With Titanium.