Macro-structures: diffuse porous materials. Pipe holes obviously to the naked eye, slightly more size medium pores; part of inclined columns; invasion is rich. Axial parenchyma under a magnifying glass can be wind, ring bundle-or wing-like. Ray gross slightly, slightly dense, slightly wider. Axial gross obvious gum road, long string columns of white dots.

Trees and distribution: large tree, high 60M, diameter 1.5-2.0M. This genus of 9 species, distributed in Southeast Asia. Often Malaysia, Indonesia imported a large amount of material in Southeast Asia is an important commercial.

Cross section: sapwood and the difference is obvious. Heartwood new section rosy, long reddish-brown. Sapwood is grey-brown, broadly 3-6cm, growth ring is not obvious.

Bark: 1.0-1.5cm thick, hard and easy to strip stripping, jacket grey swaddling clothes color to grey/rules of shallow longitudinal fissure; off behind yellow swaddling clothes. Swaddling clothes-red et; bast developed, easy to tear into lamellar; rich in stone cells, lamellar.

Material: shiny: the new section has a strong smell of camphor. Texture straight structure slightly coarse quality hard high intensity; in drying shrinkage, easy processing, section smooth; containing silica, blunt saw paint, good polishing properties; viscous differential; Nail splitting; contains tannin, color interaction with iron, corrosion, dry and slow, slightly warped, cracked, air dry density 0.8g-/cm3.

Kapur Use: suitable for rotary-cut veneer, plywood cores and back panel, floor, furniture, box blockboard, heavy engineering, General construction materials, ship keels, sleepers, timber could be made of natural Borneol, camphor synthesis of raw materials.