Pressure impregnation in FA solution. Usual woods may, after reading a similar appearance and properties as teak. (form stable, equal strength and hardness, resistant to rot and insects.)
Manufactured in particular of Kebony in Norway, which also includes the EcoBuild.
Pressure impregnation with acetic anhydride. This method affects the color less than fururylering and you get even with this method form stability (not sucking water and swells are not), resistance to rot and insect pests such as shipworm. The wood retains its good mechanical properties.
Manufactured in EcoBuild.