Cork has a unique cellular structure: it is composed of hexahedral prismatic dead cells arranged in a network, with each cell standing upright and filled with 90% air.

Cork cells are very small, with an average of 40-60 million cells per cubic centimeter, like many small air sacs gathered together. These small airbags are made of cork and have excellent functions such as elasticity, sound insulation, and heat insulation; In addition, the small airbag has strong suction force like a suction cup, and the cork also has anti slip, wear-resistant and other functions; The cell wall of cork is resin and tannin compound, so cork has the characteristics of non water absorption, anti-aging, and immortality; In addition, cork is composed of dead cells and does not contain wood fibers, so it does not grow bacteria or insects, and will not decay even after being outdoors for decades.

Cork material is known as the "soft gold" in the world due to its excellent quality, outstanding performance, widespread use, and scarce resources.