Wooden Ball Sky Ball Cork Small Ball Skill Soft Wood Yoga Softwood 8mm to 200mm Ball

What is cork: Cork (phellem), commonly known as cork, cork, cork, is the outer bark product of very developed tree species, and is the surface protective tissue of stems and roots after they grow thicker.In ancient Egypt, Greece and Rome, it was used to make fishing net floats, insoles, bottle stoppers, etc.Cork has been recorded in the Spring and Autumn Period of China.The main tree species that produce softwood are Quercus cork and Quercus cork.Usually, plants that are 20 years old or older and have a diameter at breast height greater than 20 cm can be peeled for the first time, and the resulting skin is called scalp skin or primary skin.After that, it will be harvested and peeled every 10 to 20 years. The resulting skin is called regenerated skin, and the skin thickness is more than 2 cm.The softwood cork tree (called cork oak abroad) is difficult to adapt to high cold and high temperature climates. It generally grows in mountain forests at an altitude of 400-2000 meters in subtropical and temperate climate zones.Within the range of 32 to 35 degrees north latitude, cork resources can be found in most mountainous areas that meet the geographical and climatic conditions.For exampl…