ELECTRICITY BOARDS :  Tamil Nadu, Andhra,  kerala & Pondicherry.

	MUNICIPAL CORPORATIONS : Chennai, Madurai, Coimbatore, Trichy, Tirunelveli & Salem
	MUNICIPALITIES & PANCHAYATS : All Municipalities & panchayat Unions & Town Panchayats in the state of  Tamilnadu
	GOVT. DEPARTMENTS : CPWD, PWD, P & T, Indian Railways, Nuclear Corporation, Vikram Sarabhai Space Centre, All India Radio, Ordinance Factory, Shar Centre, Dept. of Atomic Energy etc.
	PUBLIC SECTOR :  NLC, NHPC, HAL, BHEL, ONGC, IDPL, IBP, ICF, NTPC LTD., NAVAL & AIR STATIONS, Power Grid Corporation of India, L.I.C., Banks, Hospitals & M.E.S etc.
	PORT TRUST : Chennai, Tuticorin & Cochin.
	PRIVATE PARTIES : Sugar, Cotton & Textile Mills, Cement Factories, Educational Institutions, Interior Decorators, Architects, Hotels, Resorts, Electrical Contractors.
	STATE TRANSPORT CORPORATIONS : PATC, DATC, & TNSTC ETC.
	SHIP YARDS : Hindustan Shipyard, Cochin Shipyard etc.