Various components for different Alum. TrackHeavy duty gear ration, there are 1: 1, 1: 4 for choosingChain or Cord operationCord Lock controler or mechanism controlerFiber glas / chain fix weight / position ring / Alum. Track / metal or Alum. Rod / roller shft / cord / fabric / paper matting / connecter less ball chain, chain, wave lead weight. . . And so on.
Roman Blinds