Weld identification single hole punch.

墙炸开一个洞。

Most likely it was what is known as a hole-punch cloud.

最有可能的是所谓冲孔云。

Hole punch configuration flexibility to achieve a multi-prupose machine, bending plate feature matches.

打孔冲头可弹性配置，实现一机多用，台面吸气及弯版功能可选配。

Hole punch configuration flexibility to achieve a multi - prupose machine, bending plate feature matches.

打孔冲头可弹性配置,实现一机多用,台面吸气及弯版功能可选配.