Hardwood and resistant to weather changes, has little development and depreciation costs as well as having its own fiber and color. Resistant to mold and decay of wood against pests Best quality, the average age of over 50 years of logging. Good quality, which are found on the island of Kalimantan, Mollucas and Papua east of Indonesia. Excellence : The ironwood tree have Distinctive Characteristics, Namely Physical Properties of hardwood And Also resistant against changes in temperature, humidity, air and maritime influences, so it is often referred Also WITH name in Ironwood. Ulin class durability include durable class I with a specific gravity of 1.04, higher than teak/jati belonging durable class II with a specific gravity of 0.65 Because of these characteristics, the type of wood is often used for floors, furniture, building materials, such as construction of houses, bridges, electricity poles, and shipping..