Tender for Tender For Supply Of Anthracite Coal , Sand , 0.45-0.7mm , Coefi-1.3-1.7 , 2.55-2.65 , Gravel , 2.5 Mm To 6.2 Mm , Walnut Shell Filter Media , Garnet Sand , Silex , Sio2 , Bulk Density 1650-1750 , , Carbon , Granular , Activated in Begusarai - Bihar

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