1. Material: Corrugated board, craft paper, coated paper, card paper, grey paper, art paper, etc. 2. Specifications: Corrugated fiber board card carton with 3 layers, 5 layers and 7 layers according to your detailed requests. 3. Flute: A, C, B, E, AB, AC etc. Corrugated boards are all available. 4. Competitive price, large production line and speedy delivery guarantee. 5. Advanced Pringting facilities.