Many of the weaving machine manufacturers offer quick style change (QSC) system. The basic idea of these developments is to prepare module outside the weave room and keep them ready for a switch over with empty module in the weaving machine. Dornier demonstrated quick style changes from a fine worsted fabric to a pure cashmere fabrics in less than 30 minutes. Similarly, almost all major weaving machine makers offer their own version of QSC. Dornier offers Fast Dobby Change (FDC) which allows a mill exchange a dobby shedding for a cam drive when a basic style is being woven and higher shedding machine speeds are possible. The exchange times is not more than 1.5 hours per occurrence.