Redwood where there is a large identification agency

Redwood furniture identification mainly rely on wood grain, color, weight, smell. Generally speaking, with the scale of forestry teaching units, research units and technical supervision departments, can be material identification. Beijing, for example, Beijing Forestry University, Beijing Municipal Furniture Quality Supervision and Inspection Station and the Chinese Academy of Forestry can be identified, Shanghai and Nanjing also have this institution. At present, the Chinese Academy of Forestry (China Academy of Forestry Research Institute of Wood Industry Research Institute of wood properties) is the highest authority for domestic wood material identification. Thank you