JUHUANB1 fireratedpufoamoxygen indexreachesmore than30%,anditisB1 levelmeetingthe requestof Fire Department of Ministry of Publicsecurityand Ministry of Housing.Wecooperate with BeijingUniversityofChemicalTechnologyandspentthreeyearsoninventingit,wearefirstinventorinChina.ItpassesthetestofNationalBuildingMaterialsTestingCenter.Itisusedtoseal concealedpenetrationsfromfloortofloororroomtoroom,formsafireblockand adurable.airtightandwater-resistantbond.Usingthisproductcancutoffwayoffirecausedbyinflammablefillerand protecty our life and property from the threat of fire.