Electroplating means deposition of a thin layer of metal to a work piece using an electrolytic process. Electroplating is useful in automotive industry for chrome plating and in electronic industry for optics and sensors. The purpose of electroplating is - appearance, protection, special surface properties and engineering or mechanical properties. All the electroplating finishes are of extremely high quality. Zinc plating, nickel plating, chrome plating and copper plating are just a few examples of CA metal plating chemicals. Nickel coatings have a decorative appearance, corrosion protection, ferromagnetism properties, and wear resistant. The properties of tin coatings are - good appearance, solder ability, nontoxic, corrosion protection, and low friction. The applications of electroplated tin alloys are electronics, semiconductors, food containers, packages, and engine applications. The applications of hard chromium electroplating are industrial rolls, plastic molds, cutting tools, and metal forming tools. Hard chromium is thicker than decorative chromium. The properties of hard chromium are wear resistance, corrosion resistance and galling resistance.