1. Research Institute of Wood Industry, Chinese Academy of Forestry, Dongxiaofu No.1, Beijing 100091, China
2. Zhejiang Provincial Institute of Cultural Relics and Archaeology, Jiaogong road No.71, Hangzhou 310012, Zhejiang China
3. Chengdu Institute of Cultural Relics and Archaeology, Shierqiao road No.18, Chengdu 610072, Sichuan China