It can be divided into one with backbone and one without backbone. Except the frame, the connector of the steel-frame plywood formwork with backbone is basically the same as those of Aoyu steel formwork. It includes several types such as wall formwork, square column formwork, arc formwork. The line of product has been picked up in the national key project-National Stadium. The steel-frame plywood formwork without backbone has successfully found its footing in the construction market in countries such as Kazakhstan.