bids are invited for blair airport copper plate. purity of not less than 90 percent , copper strip. purity of not less than 90 percent , copper wire non- stranded. purity of not less than 90 percent , copper rod lightning arrestor. purity of not less than 90 percent , insulated copper wire purity of not less than 80 percent , gi pipe not less than 3 mm , pvc pipe uv resistant , pvc pipe not less than 3 mm , heavy-duty pvc pipe plasticcorrugated hose , salt about 1 to 3 cm granules , charcoal about 1 to 3 cm granules , cable tray , extension board , bamboo disposable ladder , self-supporting heavy-duty folding aluminium ladder , batterystand , heavy duty pvc pipe plastic corrugated hosesupply of earthing materials at dvor dme site for aai port total quantity : 4122