Cork Stoppers, china Cork Stoppers manufacturer, Cork Stoppers wholesale center

Cork is essentially the outer bark of the tree known botanically as QUERCUS SUBERL. It grows uncultivated widely in China, most of which are distributed mainly over north area of Qinglin Mountain in Shaanxi Province. The bark naturally will be stripped every 9-12 years in the summer time after growing about 25 year olds and can by harvested safely without harming the tree. The natural environment of the tree remains undisturbed, the tree continues to grow. Cork is made up of tiny 14-sided polyhedron cells filled with a gas mixture up to 40 million per cubic centimeter under Microscope, Suberin, a complex mixture of fatty acids and heavy organic polyester, is the basic substance of cork. Due to cork's unique cellular makeup, it contains such characteristics as: Lightweight Excellent Elasticity Rot resistant Impermeable to gas and liquid, Sound Absorption & Heat Resistant Durability Fire Resistant.