Plastic raw materials added to various special components which give the raw material special properties. The raw material and any additives are selected carefully to meet the customer's requirements. Some examples of properties required in the finished material are:

• Resistance to heat
• Resistance to the weather
• Resistance to light
• Resistance to chemical attack
• Impact resistance
• Flexibility
• Etc.

Glass, minerals, talc or calcium carbonates can be added to the plastic product, which can also be coloured.