... China. 1,Products information: Paper boards are made from Laminated carton board, used of 100% recycled paperboard. formed ... paper corner protector, pallet corner support , cardboard corner protector, laminated paper boards, flat paperboard, flat cardboard, paper angle board, ... with no carton collapse, made of environmentally-friendly 100% recyclable papers. 3, Quality: Standard: BB/T 0023-2004. SGS ...