AA heavy cardboard is made of corrugated cardboard, is a widely used paper container packaging, widely used in transportation packaging, for people's living standards to improve the great convenience. 2A heavy duty cardboard is widely used because it has many unique advantages:

1. Good buffering performance. 3A heavy cardboard custom has a special structure, cardboard structure of 60~70% of the volume is empty, so it has good shock absorption performance, can avoid the packaged goods by collision and impact.

2.Light and firm. Corrugated cardboard is hollow structure, with the least amount of material to form a rigid box, so light, firm, compared with the same volume of the wooden box, only 1/4~1/5 of the weight of the wooden box.