<P> The Norddeutsche Affinerie in Hamburg was the first modern electroplating plant starting its production in 1876 . </P> <P> As the science of electrochemistry grew, its relationship to electroplating became understood and other types of non-decorative metal electroplating were developed . Commercial electroplating of nickel, brass, tin, and zinc were developed by the 1850s . Electroplating baths and equipment based on the patents of the Elkingtons were scaled up to accommodate the plating of numerous large scale objects and for specific manufacturing and engineering applications . </P> <P> The plating industry received a big boost with the advent of the development of electric generators in the late 19th century . With the higher currents available, metal machine components, hardware, and automotive parts requiring corrosion protection and enhanced wear properties, along with better appearance, could be processed in bulk . </P> <P> The two World Wars and the growing aviation industry gave impetus to further developments and refinements including such processes as hard chromium plating, bronze alloy plating, sulfamate nickel plating, along with numerous other plating processes . Plating equipment evolved from manually operated tar - lined wooden tanks to automated equipment, capable of processing thousands of kilograms per hour of parts . </P>

What is meant by throwing power of an electrolyte