purchasing toners for hp samsung model printers available at various locations of greater chennai corporation for a period of one year , hp 137 x , 78a , 88a , 110a , 152x , gt53 black , gt52 cyan , gt52 magenta , gt52 yellow , gt51 gt52 head , 12a , 47 (b) , 47(tri colour) , 126ablack , 126 cyan , 126 magenta , 126 yellow , hp smart 720 head (bk) , hp smart 720 head (tri color) , 507x black , 507x magenta , 507x cyan , 507x yellow , 119a black , 119a magenta , 119a cyan , 119a yellow , 416a black , 416a cyan , 416a magenta , 416a yellow , 77a , 56a , 55a , 206a black , 206a cyan , 206a magenta , 206a yellow , 970xl black , 971xl cyan , 971xl magenta , 971 xl yellow , 230a black , 230a cyan , 230a magenta , 230a yellow , 965 black , 965 cyan , 965 magenta , 965 yellow , hp 9010 all in one(head)962/963 , 28a , hp smart tank 525head (tri colour) , 204a black , 204a cyan , 204a magenta , 204a yellow , hp mfp m72625 (toner) , hp mfp m72625 (drum) , hp designjett795 ink gray , hp designjett795 ink photo black , hp designjett795 ink mattee black , hp designjett795 ink yellow , hp designjett795 ink cyan , hp designjett795 ink magenta , hp designjett795 head (gray,photo black) , hp designjett795 head (cyan, magenta) , hp designjett795 head(matte black, yellow) , hp 713 head color , hp 712-black , hp 712-cyan , hp 712-magenta , hp 712-yellow , hp 727 (cyan) , hp 727 (magenta) , hp 727 (yellow) , hp 727 (matte black) , hp 727 (photo black) , hp 727 (gray) , hp 727/733 head , hp p77740 printer ink black , hp p77740 printer ink cyan , hp p77740 printer ink magenta , hp p77740 printer ink yellow , hp w9190mc (black) , hp w9191mc(cyan) , hp w9043ms(magenta) , hp w9192mc(yellow) , hp 730 cyan , hp 730 yellow , hp 730 magenta , hp 730 photo black , hp 730 matte black , hp 730 gray , hp 727/732 head , hp laserjet pro 203 dntoner , hp laserjet pro 203 dndrum , hp dj 2131 (b,and tri colour) , plotter t830 ink cartridge 728b matte black , 728 cyan , 728 magenta , 728 yellow , 720 head , hp 739 print head , hp 738 cyan , hp 738 magenta , hp 738 yellow , hp 738b black , samsung mlt-d116l , samsung mlt-r116 drum , samsung mlt-d101s , samsung mlt-d203s , samsung mlt-d707l , samsung mlt d111s