Chief Vigilance Officer Armoured Vehicles Nigam Limited C/o Armoured Vehicles Head Quarters, Hvf Road,Bhakthavatsalapuram, Avadi, Chennai, Tiruvallur District, Tamil Nadu,600054, India Tel : 044 2638 1787 Fax: 044 2637 3830 Email : cvo[at]avnl[dot]co[dot]in Website: https://avnl.co.in