curtain wire also called expanding spring wire,which is made of steel and covered by PVC.curtain wire'diameter is 4.0MM, the length usually is 300M,30M,5M,3M, and also can be customized.
curtain wire also called expanding spring wire,which is made of steel and covered by PVC.curtain wire'diameter is 4.0MM, the length usually is 300M,30M,5M,3M, and also can be customized.
