It's very complicated to test the new material for the building, but this is much stronger than I expected, and also it's very easy to waterproof, and also, because it's industrial material, it's also possible to fireproof.
試験を始めていました 新しい材料を建築に取り入れる試験は 非常に複雑なものですが 紙管は当初思っていたよりも はるかに強く 防水加工も とても簡単です さらに 産業資材ですから 耐火処理を施すのも 可能です