Glulam comprised of wood laminations has been used extensively for residential and commercial construction applications.The objective of this study was to optimize manufacturing process for potential glulam products using plantation lumber of Chinese Fir.Water based polymeric-isocyanate adhesive was used in this study.Processing factors including pressure,adhesive spread rates,and the amount of additive were investigated.The results indicated that optimal parameters were: pressure=0.8 MPa,adhesive spread rate on both sides=250 g/m2,and additive percentage=10%（oven-dry weight of the adhesive）.