Imported pine timber. Knots can be found. In the place where the knots are the most,there can be solid knots not exceeding 4 cm in diameter within 1 m. Rotten,crippled and falling knots are not found in timber. There are no ring cracks or large crevices. Lift bend does not exceed ½ part. There are no resin sacs,inner shells,rots,cavities,insect holes,irrigation and manufacturing defects. All four sides of the timber will be wiped and chamfered.