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NYY 450/750 V.70°C STRANDED CONDUCTOR PVC INSULATED AND DOUBLE SHEATHED, สายไฟชนิดตัวนำทองแดง/สายไฟแรงดันต่ำ CABLE STRUCTURE CONDUCTOR Annealed Stranded CopperCLASS 2 Size 50 – 300 mm² INSULATION Polyvinyl chloride type PVC/C INNER SHEATHED Polyvinyl chloride type PVC/ST4 OUTER SHEATHED PPolyvinyl chloride type PVC/ST4…