Self-Locking with Pre-Glued Panels Lock Corners – Locking Flaps with Fold-Over Expansion Piece B31.02.00.00.c Self-Locking with Pre-Glued Panels Lock Corners – Locking Flaps with Fold-Over Expansion Piece B31.02.00.00.c Production Team2021-05-18T21:55:20+08:00 ECMA B31.02.00.00.c Self-Locking with Pre-Glued Panels Lock Corners - Locking Flaps with Fold-Over Expansion Piece