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There are two kinds of galvanized chain-link, GBW or GAW: Galvanized before weaving (GBW) or galvanized after weaving (GAW). The vast majority on the market today is galvanized after weaving.
Color chain-link fence is sometimes called vinyl or color-coated. In this process, steel wire is first coated with zinc and then covered with a vinyl polymer coating that helps prevent rust and adds color. The vinyl is generally added to both the framework and the fabric of the fence.
Some chain-link fence products use an aluminized coating to cover the steel in place of the zinc that creates a highly reflective finish. Regardless of the finish, all chain-link products offer a durable, economical fence system.

Here are the things to consider when selecting chain link your fence system:
Primary Use - If the system is mainly used to accent your landscaping or define property boundaries, you may be able to use a lighter mesh than if you were containing pets or protecting property.
Visual Aesthetics - If you desire a fence system that blends into the environment then you should consider a color coated system.
Potential Stress - If their is the potential for climbing, or leaning (dogs) on the fence you may want to consider a heavier mesh than normal.
Longevity - If the system is to remain for many years, be sure to consider the finish coating of the mesh. The color coated meshes have a long life expectancy, holding the appearance from day one throughout.