When the copper wire passes through the twisting bow on the twisting machine, the twisting bow makes each single copper wire spirally wound together through a circular motion; twisted copper wire is the largest amount of single copper wire, and different specifications are different A number of copper wires are twisted together in a certain order and pitch to become a conductor with a larger diameter. This twisted conductor is much softer than a single copper wire of the same diameter. The wire also has better bending properties. The single wire appears once at a fixed distance along the direction of the twisted wire, and the fixed distance apart is the pitch of the twisted wire (referred to as the twist pitch). Another definition of twist pitch is: refers to the vertical distance of the stranded wire body after every 360 degrees of rotation along the twist axis, the unit is mm, and the English is pitch.Stranded litz wire is realized by twisting single wire around the stranded wire shaft with equal angular velocity and uniform forward movement of the stranded wire. Commonly used are copper and aluminum. Copper and aluminum wires can be twisted into conductors and cells of various cross-sections and different types of wires and cables. It is suitable for occasions where the operating frequency is high and the skin effect and proximity effect loss of single-strand wires are too large. The use of stranded wires can reduce the operating temperature. Compared with single-stranded wires of the same cross-sectional area, stranded wires have higher mechanical properties and flexibility.