Soldering; metal treating; metal casting; millworking; burnishing by abrasion; laser scribing of copper products; laminating of metal plates; coppersmithing, namely, copper casting, copper plating, copper laminating, copper fabrication and finishing for others; custom assembling of metal products for others; metal plating

Antennas; aerials; network communication equipment, namely, communications headsets for use with communication radios, intercom systems, or other communications network transceivers; radio equipment, namely, air traffic control radio equipment; intercommunication apparatus, namely, amplifier for wireless communications; satellite navigational apparatus, namely, satellite-aided navigation systems; optical communication equipment, namely, optical receivers; heat regulating apparatus, namely, el...