Expanded metal security partitions is manufactured in two ways: raised expanded metal and flattened expanded metal. Raised expanded metal is also known as standard expanded metal, it has diamond openings with slightly raised surface.

Perforated Metal Mesh or say punching mesh is widely used in daily life. Now it is summarized as follows:(1) used as filters in internal combustion engine of automobile;(2) used as comminuted screen, griddle and H screen for mine, pharmaceutical or food industries;(3) used as sound insulation of ind