8121/E8 PROVN OF SAFETY ENCLOSURE FOR TRG GROUND AND CROSS COUNTRY TRACK AT EQTN SEC OF OTA CHENNAI, PROVN OF WEATHER PROOF EXTERIOR FINISH AND OTHER RELATED ITEMS FOR BLDG NO. P-341, P-255 AND P-256 OF (ORS MD ACCN) AT NANDAMBAKKAM, PROVN OF CGI (投標 №116474592cn)