The advantage and disadvantage of metallic lens frame

 1) Zinc, white copper metal Round Frame Glasses. The copper, zinc alloy of domestic lens frame, the ratio of copper is great, therefore heavier, elasticity is poor, easy to take off plating, oxidation. The Small Round Eyeglass Frames is oxidized to form copper oxide. It will turn copper green. Affect aesthetics.

2) Copper, zinc, nickel alloy (called Monel alloy abroad). The content of copper is greatly reduced and the ratio of nickel is increased, and the elasticity is increased. However, as wet electroplating is still used in China, the phenomenon of deplating and corrosion is still widespread. But this kind of Mens Round Eyeglass Frames has good workability. Many styles, especially popular with young people.

3) New alloys. Nickel content is above 86%, copper content is less than 1%, good cold stretching performance, light texture, corrosion resistance, strong coating. But customers in Europe and the United States have been advised Round Frame Glasses Mens not to wear nickel because of its potential to cause skin irritation.