Electronic and optical communication instruments and equipment, components and parts including optical transmitters, optical receivers, optical data links, optical combined transmitters and receivers; cable television transmitters, digital transmitters and communication link test devices for testing communication links
Electrical and Scientific ApparatusRetail services and marketing for electronic and optical communication instruments and equipment, components and parts including optical transmitters, optical receivers, optical data links, optical combined transmitters and receivers, cable tv transmitters, digital transmitters and communication link test devices for testing communication links
Advertising and BusinessRepair, installation and maintenance services for electronic and optical communication instruments and equipment
Building Construction and Repair