Hard coating is composed of silicone resin and organic solvents for different kinds of plastic; wear-resistant can meet the requirements all over the world, past the falling sand test E/ECE/324 Regulation No. 22; in order to ensure the flexibility of the lens under the premise of wear-resistant can be improved as much as possible, the highest can be up to 2.5 or so.

Not only plastics, hard-coating can also be applied to metals, circuits, spectacle lenses, porcelain, stoneware, etc. It prevents erosion, isolates water vapor and moisture, prevents fingerprints, and hardens lenses.

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