1. College of Chemical Engineering and Resource Utilization Northeast Forestry University Harbin China
2. College of Chemical Engineering and Resource Utilization, Key Laboratory for Molecular Design and preparation of flame retardant materials in Heilongjiang Northeast Forestry University Harbin China
3. College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry Shaanxi University of Science and Technology Xi'an Shaanxi Province China