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Silicon Weatherproofing Sealant Used

The silicone weatherproofing sealant is using for calking seams of the glass for hidden frame supported glass curtain wall  or other materials .Except the function of with sanding the wind and rain,it must be adapt of the expand with heat and contract with cold between the curtain wall glass sheets because of climatechange,this function can let the seam firm even if the width of the seam is changing.In general,the dilatability should get to ±25%of the width of seam.