(1) Inflexibility: prefabs are not identical
products which can be stocked in advance. The form of
prefab should be designed in the first stage and then produced
in a production yard, so work-in-process inventory or safety
stock of finial products are not suitable for prefabrication
technology, since the form cannot be predicted. In this way,
multi-sourcing, transhipment cannot be used to mitigate
uncertainties in the prefab supply chain. Prefab supplier
cannot be easily changed once chosen and none
supplementary product can be used for replacement. (