Unglued Self-Locking with Four Double Walls Lock Corners – Locking Flaps with Fold-Over Webbed Corners B11.04.00.00 Unglued Self-Locking with Four Double Walls Lock Corners – Locking Flaps with Fold-Over Webbed Corners B11.04.00.00 Production Team2021-05-18T21:53:48+08:00 ECMA B11.04.00.00 Unglued Self-Locking with Four Double Walls Lock Corners - Locking Flaps with Fold-Over Webbed Corners