Carbonized bamboo flooring is obtained through a process called carbonization. The longer the process, the darker the bamboo flooring will be. Dark color on the bamboo flooring is acquired when bamboo undergoes pressure heating, which is a part of the process. During pressure heating, the sugar contents in the fiber darken and attain a coffee-colored tone on the surface. However, this pressurized heating might weaken the bamboo flooring from 20% to 30%.