三防針刺過濾氈的三防即為“防水、防油、防靜電”，即在防靜電針刺氈的基礎上增加“潑水、潑油”功能，適用于含濕量較大的場合，如鋼鐵廠高爐噴煤粉、水泥廠，電廠輸煤系統等。
                 Three resistance needle punched filter felt
The three resistance of three resistant filter felt means  water repellence, oil repellence and anti static , it is said on the base of anti-static filterfelt add to the properties of water repellence and oil repellence. It is used in the occasion of high humidity, such as high stove jet coal powder of ironsteal factory, cement , conveying coal system of power factories.