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2010 Qianchuan Comprehensive Upgrade - Raw Materials Edition

　　In 2010, Qianchuan underwent a comprehensive upgrade. We put a lot of effort into the raw materials. Now, this is about the current state of the entire industry and the differences in the materials used.

　　Currently, in our wooden door industry, for mid-range integrated solid wood products, most use cedar, which is the cheapest wood product used. However, these two types of wood each have their own advantages and disadvantages. Cedar has a larger range of variation. As everyone knows, wood expands and contracts with heat and cold. To prevent deformation of wooden door products, different companies have been exploring and improving in this area. However, many small factories in Sichuan with low brand recognition use construction wood boards or cedar, which may not be very good. They let the wood dry naturally, but the moisture content does not meet national standards. The national requirement is 8-12%, while we generally control it within 6-10%. Qianchuan, after purchasing raw materials, allows a curing period under natural conditions. After drying treatment, the internal stress changes in the wood have not completely stopped, so it must be placed under natural conditions to balance the internal and external moisture content with the environment. This prevents deformation later. Many small factories cannot achieve this with raw materials.

　　Now Qianchuan wooden doors have further upgraded their raw materials to use imported Canadian pine. What are the benefits? Canada is known as the country with the largest forest coverage in the world, and its climate is suitable for wood growth. The trees mature relatively quickly and have larger trunks. We use this pine, which has better bending performance compared to incense cedar and cedar, and also has stronger corrosion resistance. Through experiments in harsh environments, usually under stable sunlight and in drying rooms at 70 to 80 degrees Celsius, the variation rate of this pine is very small. Cedar bends by 1 cm, incense cedar by 8 mm, and pine only bends slightly by 2 mm. According to national standards, 100% no change is impossible because it is a natural property of wood. But this variation rate of only 2 mm was found in simulated environment tests. In typical home decoration and engineering indoor environments, which are less extreme than the simulated environment, it will not undergo significant changes. According to national standards, a 2-meter-high door is allowed to bend 1 to 1.5 mm, which is normal.