text: Polyester resin offers the following advantages: 
  # Adequate resistance to water and variety of chemicals.
  # Adequate resistance to weathering and ageing.
  # Low cost. 
  # Polyesters can withstand a temperature up to 80 °C.
  # Polyesters have good wetting to glass fibres.
  # Relatively low shrinkage at between 4–8% during curing.
  # Linear thermal expansion ranges from 100–200 x 10 K.