STUDY ON THE IMPREGNATION OF PHENOL RESIN IN CHINESE FIR AND ITS IMPROVEMENT Research Progress of Phenol-formaldehyde Resin A Novel Plywood Adhesive Synthesized by Phenol-Formaldehyde Crosslinking Alkaline Chinese Fir Liquid Effect of Phenol-Formaldehyde-Modified on Mechanical Properties of Tracheids Cell Wall