... pvc or ps 1)Model: CY3052)Material: PVC, swtich control box3)Payment terms: 30%T/T, balance before shipment ... wire and cable from easy damage or ruin2)installation during the process of construction , electrical equipment, components3)control box ... to acids, alkali and oil5) good insulation characteristic, good insulation property, good fire-resistant ,good combustion-ressistance switch control box