Appraisal institutions are Wood Industry Research Institute of China Academy of Forestry, College of Materials of Nanjing Forestry University, Shanghai Furniture Quality Inspection Station and China Furniture Quality Inspection Center, and the appraisal certificates issued by them have legal effect.
A genuine mahogany furniture product should have three guarantee documents: product instruction manual, product quality express card and product certificate. The preparation and content of the documents are standardized.