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Glass-reinforced plastic (GRP), is a composite material made of a plastic reinforced by fine
fibers made of glass. The plastic is
most often polyester, but other plastics, like epoxy (GRE), are also sometimes used.
GRP/GRE is a versatile material with many uses. Its first main application was for building of boats, where it gained acceptance in the 1950s, and now plays a dominant role.
But its use has broadened over the years, and it is used extensively within the automotive and sport equipment sectors. Also
pipes for drinking water, sewers, chemicals etc. are made of GRE.
The term "fiberglass" is often used, rather imprecisely, for GRP.
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