Construction and Demolition Waste (CDW) Treatment Construction and Demolition Waste (CDW) Crushing Mobile Plants ZB GROUP CDW crushing Mobile Units are equipped with FZB Hammermills which guarantees a high coefficient of reduction of the concrete (100% from 0 to 60-80 mm) with materials up to 800 mm in size at the entrance, all in a single process (one pass) with no recirculation