For automatic welding, conveying and cleaning of rectangular frames (or fans) of plastic doors and windows. It consists of welding unit and angled unit. Welding unit and Qing angle unit respectively using industrial computer control, equipped with the company's independent research and development of a dedicated CNC system.

The cutting length is controlled by a full-closed-loop numerical control system, and the automatic feeding device of a full-closed-loop numerical control system is adopted to realize automatic conversion from 45° to 90°

The device uses industrial computer as the hardware hub and the most advanced human-machine interface LED LCD touch operation display, and is equipped with the company's development of special cornering software (operating system support in Chinese/English bilingual display).