What unit does the character MN represent in the aluminum alloy extrusion machine?

MN is a unit of force, and MN literally means "meganew" or "one million cattle". 1 trillion is 1 million. It is roughly 100 tons of force. For example: the extrusion force of a 630-ton extrusion machine is 6MN, which is a force of 6,000,000 Newtons. Of course, the larger the value, the greater the extrusion force, and the more regular the extruded things.