Escandon Locks and Keys, 126 Lowell Rd, Concord, MA 01742, US

Technical Communications Corporation designs, manufactures and supports superior grade secure communications systems that protect highly sensitive information transmitted through a range of data, voice and fax networks. The firm s security solutions protect information privacy on every continent in more than 100 countries. It provides both industry standard and customized encryption solutions for high-performance local area networks, wide area networks, Internet, wireless and point-to-point communications applications that include both public and private key-based products. The company has more than 40 years of experience in cryptology and is a leader among dedicated secure communications manufacturers in the United States. More than 2,000 government agencies, militaries, financial institutions, telecommunications carriers and multinational corporations worldwide rely on the company to protect their communications networks. Technical Communications Corporation is headquartered in Concord, Mass.

ADT Alarm & A D T Security

CONCORD LUMBER CORP.