The present invention relates to a hemmed panel and a method for fabricating a hemmed panel. In a direct process, the present invention involves heating calcium carbonate to a temperature greater than its melting point or heating a molten mixture containing calcium carbonate; and subjecting the molten calcium carbonate or molten mixture to electrolysis to generate calcium oxide and oxygen, and a reduced carbon product. Each of the network devices transmits an SNMP trap indicating a change of its own operation status to the management server when a status change occurs. The link-up region is disposed in a second opening separate from the first opening and in an undercut region extending from the second opening below the raised extrinsic base layer.