The main wood in my defense rot floor is Pinus sylvestris var. mongolica. The pine tree is fine and straight, and after being treated with antiseptic treatment, it can effectively prevent the invasion of mold, termites and microorganisms, and can effectively inhibit the change of moisture content of treated wood and reduce it. The degree of cracking of the wood makes the outdoor anti-corrosion wood board more durable and prolongs the service life of the anti-corrosion wood. Pinus sylvestris var. mongolica is mainly distributed in summer and cold winter with suitable precipitation. It is distributed in Daxing'anling of Heilongjiang Province, part of the mountainous area west of Hailar of Inner Mongolia and the northern part of Xiaoxing'anling. Russia's Pinus sylvestris var.
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