White copper is an alloy of copper and nickel with a silvery-white surface, similar to everyday silver, with a metallic luster. It was mainly used in ancient times to make ceremonial objects or decorative items, but the main disadvantage is that white copper jewelry can develop green spots after being worn for a while. Bronze is tough and does not scratch easily.
Bronze is the earliest alloy in the history of metal smelting, an alloy of tin or lead added to pure copper (purple copper) with a greenish surface, often used in ancient times to make ceremonial objects and bronze swords. Bronze is the earliest metal alloy, high strength and low melting point, bronze casting better, wear-resistant and chemically stable. Mainly used in casting a variety of appliances, mechanical parts, bearings, gears and so on.
