Profile: Joseph National Business, Inc. is a supplier of electronic replacement parts. Our product line includes test equipments, lamps, speakers, audio and video, switches & components. We also distribute product such as audio, CCTV, radio and communication. Our test equipment such as multimeters, power supplies, DC and AC inverters, AC automatic voltage regulator, contact voltage regulator, adapters & converters, electric tools & tape measure. Our components includes resistors, capacitors, diodes, bridge rectifiers, fuses, semiconductors, rubber belts and monitor fly backs.