Tender For supply of anti bird disc made from polycarbonate fire retardant material having spike around it made out of 8 mm thick polycarbonate sheet, with fasteners and silicon ring suitable for conpoaite and porcelain type bracket/stay/9-tonne insulators (maintenance instruction no. ti/mi/0059 - rev.2) or latest as per rdso drawing no. ti/drg/ohe/abd/rdso/00000/19/0 - rev 1 (sh-1/2 & sh-2/2 ) or latest. before the tpi inspection, the firm should get the sample approved from the consignee. [1 ]