1.combustion-proof 2.reistant fire, 3.installation conveniently, 4.customizing the goods according to the request Features:1) Impact and bear pressure and can be buried in concrete2) Free from aging and color changing3) As soon as departing from the fire, the fire on them dies out immediately4) Dampproof, acid and alkali resistant5) With different dimensions available6) OEM and ODM orders ...