The eastern and western parts of the United States are the gold producing areas of elms, and their properties are far superior to those of elms in China, such as red oak and Fraxinus mandshurica in the United States, and their properties and values are also superior to those of Fraxinus mandshurica in China, which is determined by the local climate and water and soil conditions.

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Advantages of American red elm

1) Wood is tough, moderate in weight, good in rigidity, suitable for general relief carving, and has excellent bending resistance and seismic performance. Known as "elm pimple" in China, old elm furniture has strong toughness and corrosion resistance.

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2) Wood has good elasticity, wide width, excellent texture and low deformation rate; Moisture resistance, corrosion resistance, because its wood grain is inclined, it is not easy to crack. Is a great man in the wood, can resist humidity in the south and dryness in the north. In medieval Europe, elm trees were made into water pipes, which could be kept moist for a long time without rotting.

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4) Elm is also a tree species resistant to toxic gases such as carbon dioxide and chlorine. It contains β-coumarol, plant alcohol, coumarol and other kinds of coumarol, polonium, gum and fatty oil.