dassoXTR Fused Bamboo® is manufactured using dasso's patented process, which combines two stages of high heat to first carbonize the bamboo, removing all of the starch and sugar, and then restructure the bamboo, reinforcing its natural strength characteristics. The modified bamboo strands are then fused together using phenolic resin – the same resins used to make bowling balls. The result is an extremely dense, durable exterior-use product composed of 87% natural, fused strand bamboo fibers and 13% resin. dassoXTR Fused Bamboo looks and acts much like other natural hardwood products.