Gỗ tốt, cứng, thớ mịn, rất bền ngoài không khí, không bị mối mọt, dùng trong xây dựng, đóng thuyền, làm khung nhà, ván sàn, có thể thay gỗ tếch (Tectonia grandits) trong nhiều công việc. Vỏ cây dùng làm vách nhà thay gỗ, rất bền

Other names: Merawan

Big timber trees, evergreen, with spherical canopy, straight body, up to 40 m high, 0.6 to 0.8 m diameter or more. Black shell, cracked deeply. Leaves are single, sprouted, egg-shaped, with pointed tips and round roots. Dry leaves are dark gray, the upper surface has white chalk. Inflorescence cluster. Flower pattern 5; petals are light red, fur on the outside. Small oval fruit, with a beak at the top, a woody bark with a lot of plastic, carrying 2 wings of 2 – 2.3 cm long with 7 parallel tendons