Biodegradable poly are synthesized from amino acids, diols and dicarboxylic acids where one or both of the diols and dicarboxylic acids contain unsaturation; e. Each of the dispensing tables 6 and 6 so divided has a partition wall 33 secured to a cut edge 6a, which is left along the line of division, so as to extend upright. When a substrate is hydrophobilized, the substrate is coated with a surface treatment liquid containing a silylating agent and a hydrocarbon non-polar solvent. Where demands with TSA-blocked routes are found, blocking spans are identified and a cost associated therewith is increased during an iterative re-routing process with respect to each of such blocked demands.