Shen, Aquilaria Resinatum, Hainan Aquilaria Resinatum, Daughter Fragrant, Guanxiang, Lingnan Fragrant. Resin-containing heartwood of Aquilaria Resinatum of Daphne family. There are four specifications of agarwood: 1 No.1 incense (heavy and fragrant), No.2 incense (firm and fragrant), No.3 incense (loose and fragrant) and No.4 incense (loose and light). Its shape is irregular, the surface is mostly rotten wood-like, with knife marks and occasional holes, and black-brown resin and yellow-white wood stripes can be seen. Imported agarwood is also known as Shen Shui Xiang, Yan Kou Xiang, Penglai Xiang, Mi Xiang, Zhi Lan Xiang and Qing Gui Xiang. (The above is the name of the document). Resin-containing heartwood of Aquilaria Resinatum of Daphne family. Location: Indonesia, Malaysia, Singapore, Vietnam, Cambodia, Iran, Thailand and other places. The agarwood produced in Indonesia, Malaysia and Singapore is called Xinzhou Xiang, which has the best quality and lasting fragrance. The agarwood produced in Vietnam is called Cary, which is of poor quality and has a good and sweet burning fragrance.