1.can use the steel wire to driver the fabric, easy to installation, 2.suitable for large roman ... by POLITE or SOMFY tubular motor.2: according to the load and the system height to choose the motor.3: can ... or 70 tube.4. can use the steel wire to driver the fabric, easy to installation, suitable for large roman curtain ... family, hotel, cafe bar, villa, meeting room Motorized Roman up - down Curtain