FİBER
    Fibreboard is supportive used for making insoles in shoe industry. It can be in different thicknesses and qualities. It is made of recycled papers etc.
-BTO :

Standart quality fibreboard which is widely used in shoe industry. It can be in 1.5-2.00 and 3.00 mm also available in different thicknesses on demand.

-BCT : Standart plus quality fibreboard which is used more rarely. Can be found in several thicknesses.
-BCC : Premium quality fibreboard which has higher quality from both BTO and BCT. Can be found in several thicknesses 0.8-1.00-1.50-2.00-2.40-2.50-3.00mm.

-BCR : Superior quality fibreboard which has higher quality from any other fibreboard model. (BTO,BCT,BCC etc…) Alsa can be found in several thicknesses.