Tender For corrigendum : supply of hold back, g/b, id-30, sl-1, r. s-3.10. 265 for item 1 , hold back, g/b, id-50, sl-5, r. s-3.10. 265 for item 2 , blocking device no: 317, dwn: pd/r-21168 for item 3 , hold back, g/b, id-55, sl-6, r. s-3.10. 265 for item 4