Dujung company's a represent product is the Coco block that is an eco-friendly elastic rubber block. Coco block is used by elastic floorings on playgrounds or facilities. It is same as usual rubber elastic floorings. Moreover, the product is not included 4 heavy metals and harmful substances. usually, people use the rubber block that is made by waste rubber tiles and epdm chips(initialism of ethylene propylene diene terpolymer) with urethane glues. a usual rubber block has many bad effect for us. at the first, It is harmful for eco system and has only minimum standard for containing harmful substances. Second, the life of block is same as the life of urethane so it might be easily crushed after more than 2~3 years. But the coco block has very strong weaved every single fibers tightly. The strongest advantage of the Coco block is eco-friendly. This is made only by a coconut fiber and latex. The block is all natural and fresh materials and tested by the Korea environment merchandise testing institute. Dujung is a company that business with government and only have patents for making a Coco block over the world. you can check more information on our website.