COMPREHENSIVE ANNUAL MAINTENANCE CONTRACT ( CAMC ) FOR ONE NUMBER OF COMPUTERISED OPTICAL BRINELL HARDNESS TESTER AVAILABLE AT CMT LAB OF CENTRAL WORKSHOPS/ SOUTHERN RAILWAY/ PONMALAI TIRUCHIRAPPALLI- 620 004 WITH OEM ' s AUTHORISED SERVICE PROVIDER ( M/ s. Hitech India Equipments Pvt. Ltd, Chennai ) ON SINGLE TENDER BASIS FOR THREE YEARS in IREPS portal.