Host large knife cardIt can also be called a box, which can directly hold computer hosts. Generally, a large knife card can hold 5 hosts.Hollow board knife cardAlso known as partitions, they have environmental characteristics and are a wise choice for export products, high-end products, and anti-static products. The hollow board knife card is made of PP environmentally friendly hollow board, and then molded into the expected shape through a beer machine, and then assembled piece by piece by hand