Cardboard box makers in Japan are coming up with innovative designs to ameliorate corporate labor shortages and to improve delivery efficiency.

Market leader Rengo Co. is displaying such products at its showroom in Saitama Prefecture, including boxes that are easily opened and double as actual displays for the merchandise inside.

"Supermarkets and other big retailers want to avoid spending lots of time on opening cardboard boxes and displaying merchandise from them on store shelves," said Tetsuo Muroya, Rengo's chief spokesman. "Cardboard boxes here are designed to meet the need."