女人张腿男生桶视频免费,美女被男人桶到爽免费视频,女人腿张开让男人桶爽肌肌

    1. <strike id="k5ax2"><sup id="k5ax2"></sup></strike>
    2. <object id="k5ax2"></object>
        鳳鳴·致力于密封解決方案
        河北鳳鳴塑膠制品有限公司
        穩健 · 創新 · 共贏

        NEWS CENTER

        新聞中心

        Wooden door seal

        • 分類:行業新聞
        • 作者:
        • 來源:
        • 發布時間:2019-11-01 17:19
        • 訪問量:

        【概要描述】The silicone rubber sealing strip is completely different from the ordinary rubber strip, and it has excellent anti-compression deformation performance, so the sealing contact surface can be made larg

        Wooden door seal

        【概要描述】The silicone rubber sealing strip is completely different from the ordinary rubber strip, and it has excellent anti-compression deformation performance, so the sealing contact surface can be made larg

        • 分類:行業新聞
        • 作者:
        • 來源:
        • 發布時間:2019-11-01 17:19
        • 訪問量:
        詳情
        The sound insulation of the home door is very important, because the seal is connected to the outside, which is the weak link of sound insulation. The sound insulation of the door is mainly determined by the thickness of the door panel and the degree of sealing between the sash and the frame. When we live in a high-rise building, we will find out why the electric heating and air conditioning do not work. The key is that the doors and windows are insulated and the heat insulation effect is too bad. The reason for this is that the door and window tightness is too low. Hot air or cold air can enter directly from the gap, and the air or hot air inside the room overflows seriously. Even if you have good equipment installed, you can't solve the root cause. Most of the energy is still slipping away. Doors and windows with low adhesion are not only energy-saving and low-consumption, but also soundproofing is not ideal. The sound insulation of the holes and the slits is also related to the wavelength or frequency of the incident sound waves, because the higher the frequency, the shorter the wavelength, and thus the high frequency sound, even if the gap is small, will be detrimental to the sound insulation.
        In the production process of the wooden door, the door file is made with a T-shaped groove, and the matching sealing strip is provided, so that the door has excellent door sealing soundproofing function, and also reduces the noise generated when the door is closed, and also The insulation of the door and the firmness of the structure are enhanced. The wooden door seal is directly related to the compactness of the wooden door. The sealing strip is “hidden” at the contact part of the door cover and the door leaf. The good quality sealing strip is soft, flexible and bright. The regular wooden door enterprises will add silicone sealing strips. These physical properties of the silicone sealing strip are especially superior.
        The silicone rubber sealing strip is completely different from the ordinary rubber strip, and it has excellent anti-compression deformation performance, so the sealing contact surface can be made larger, which effectively blocks the noise coming in from the movable window part! It has more sound insulation than ordinary rubber strips. The seal is durable, and its service life and door and window life are synchronized. Once and for all, no worries. It will not be hard at minus 50 °C, and it has a high temperature resistance of 200 °C. It is the same material as the pressure cooker seal used in the home. It does not shrink and does not deform and has strong elasticity!
         
         
        關鍵詞:

        掃二維碼用手機看

        FENGMING

        全國熱線電話: 18733118111

        冀ICP備13011107號-2   網站建設:中企動力天津
        2020 ? 河北鳳鳴塑膠制品有限公司 版權所有

        女人张腿男生桶视频免费,美女被男人桶到爽免费视频,女人腿张开让男人桶爽肌肌