Bottom Lock Cartons, also known as Crash Lock Boxes or Auto Lock Bottom Cartons, are specially designed folding cartons that offer quick assembly, superior strength, and secure product packaging. These cartons feature an innovative pre-glued locking mechanism at the base, allowing the bottom to automatically lock into place when the box is opened — eliminating the need for additional tape or glue during packaging.

Constructed from high-quality duplex board, kraft paper, or corrugated sheet, Bottom Lock Cartons are known for their excellent load-bearing capacity and structural stability. Their strong base provides reliable support for medium to heavy-weight products, making them ideal for packaging items such as cosmetics, electronics, food products, pharmaceuticals, household goods, and retail items.