SPF processing is the treatment of SPF sheets , which have some of the same characteristics. The trees are medium in size with an average height of 26 m and a diameter of up to 80 cm. They are cold-tolerant species that produce well-textured and knotty fibers due to their slow growth in the northern climate. SPF drying is easy and uniform. SPF wood is lightweight, clean and bright, with colors ranging from white to light yellow, with a straight texture and a smooth texture. After drying, it has high strength and stable performance. It has excellent processing properties and is suitable for grooving and drilling. It has good gluing properties and strong nail holding ability, suitable for painting and coloring. One of the most important characteristics of SPF wood is its ability to dry easily and evenly in the drying equipment. Almost all wood is dried by the kiln to reduce its moisture content to less than 19%. The kiln drying treatment can prevent the wood from staining, improve the strength and hardness of the wood, and improve its appearance and processing performance. More importantly, the drying process improves the stability and finishing quality of the wood. The wood is resistant to dents, bending, and twisting, thereby reducing wood waste, reducing construction costs, reducing product recycling, and ensuring high quality of peace of mind.