·Internal frame type: You can choose one or more two-plug internal frames, including national standard two-plug, British two-plug, Brazilian two-plug, American two-plug, Australian two-plug and other countries' safety regulations two-plug internal frames. Any 3 types of bracket combinations are universal.

·The servo motor is used to accurately rotate and drive the wire to accurately output the wire. The linkage and tail stripping simplifies the mechanical structure and action compared to the traditional structure, which can improve the stability of the equipment and reduce the failure rate of the equipment.