Cardboard box makers in Japan are trying to meet various corporate needs by coming up with innovative boxes designed to cope with labor shortages and improve delivery efficiency.Market leader Rengo Co. is displaying such products at its showroom in Saitama Prefecture, north of Tokyo, including boxes that can be readily opened and used to display the merchandise inside."Supermarkets and other big retailers want to avoid spending much time on opening cardboard boxes and displaying merchandise from them on store shelves," Tetsuo Muroya, Rengo's chief spokesman said. "Cardboard boxes here are d…READ FULL ARTICLE