A method of producing a metallic component includes: providing a body made of a first alloy; providing a preform comprising a metallic powder made of a second alloy and formed in the shape of an extension of the body; and heating the preform with microwave energy to sinter the metallic powder together and to bond the preform to the body. or lower, a subsequent stage polymer having Tg of 20\xb0 C. When a firmware update request is received by the network IF, the image forming apparatus restores power supply for execution of firmware update. The first terminal is configured to receive the first voltage from the solar cell section, and the second terminal is configured to output a second voltage that is higher than the first voltage. Methods of forming the multilayer films are also disclosed. The process provides a high selectivity involving the target product, blast-resistant work operations and is promising for industrial use.