1. Glue mixing ratio Urea-formaldehyde resin powder: water (weight ratio)
100 parts: 40-60 parts
2. Board pretreatment
① Select high-quality boards, and adjust the moisture content of the boards to 8-12%
② The surface of the board is smooth and flat, and the convex bulges, concave holes and cracks on the surface are repaired. The surface of the adherend is oil-free and dust-free.