Individually controllable multi-colored illumination units, including light beads and a light wand, the beads preferably connected to the wand or to each other through conductivity elements providing electric conductivity for at least four separate lines through the connection while providing for full relative rotation and limited swivel between the connection elements. A highly stable polymer can be obtained by reacting a material polymer having a principal chain including at least a component unit having an acidic functional group and a component unit having a hydroxyl group with an isocyanate compound, and further reacting the same with an alcohol. In some instances, labels having unique codes are used to label the produce in the field, and two additional labels are placed on the harvest form to associate a range of unique codes with the harvest information on the form. The method still further includes determining, by the processor, a first profile and a second profile based on the aggregated plurality of data. The invention also concerns solvent-free or emulsion-type silicone compositions comprising the \u2261Si-Vi POS, the crosslinking agent \u2261Sl-H POS and the platinum catalyst among others.