P.V.C, soft/rigid are molded in spiral shape to manufacture high .low flexible hose, Dunt hose and all kinds of spiral hoses.
 To revive safety and request for secure plenty space due to specific narrow road and small area, we have tendency of laying wires and communication wires to underground.
 It is widely used because of easy to work for this kind of underground wired tube and have and excellence of durability and resistance and for it's cheap cose.