A transfer device for mail items with a transfer unit which has an ejection point for transferring individualized mail items to an item carrier is provided. One or more stages of a circuit design are identified. Suitable transformations include instructions that transform between Cartesian, pre-defined non-Cartesian, and user-defined non-Cartesian coordinate systems, including transformations between a non-Cartesian coordinate system to another non-Cartesian coordinate system. The device also includes a forwarding engine configured to assemble the next hops for the data units based on using the chain of links in the first table to retrieve the next hops in the second table and to forward the data units in the network based on the assembled next hops. The process is particularly suitable for continuous measurements in a urea process. Such flame retardant material precursors will complex with the diamine monomers via a copolymerization reaction to form the flame retardant materials.