ソース:[1] Cardboard-Box Demand Is Slumping. Why That’s Bad News for the Economy. (https://finance.yahoo.com/m/5d82cdba-9841-33b ...)[2] Cardboard-box demand slips, raising concerns about consumer spending - Seeking Alpha (https://vertexaisearch.cloud.google.com/groun ...)[3] Dark clouds are weakening sentiment at both ends of the income spectrum (https://vertexaisearch.cloud.google.com/groun ...)