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<title><![CDATA[EC21 Product Catalogs - upper stiff]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/upper-stiff--4111/1/upper stiff.html]]></link><item>
<title><![CDATA[Friction Pendulum Seismic Isolation]]></title><link><![CDATA[https://tiantie001.en.ec21.com/Friction-Pendulum-Seismic-Isolation--11883249_11930111.html]]></link><description><![CDATA[The friction pendulum is composed of steel and friction materials like friction pendulum bearing. The natural vibration period of the upper structure is extended by the relative sliding of the spheri]]></description><pubDate><![CDATA[20240426]]></pubDate></item>

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