need to know how to do repair items

hi i need help to repair items . the armor i bought from shop how can i repair it by the game char . not by game shop . coz u see if i repair by shop 3/4 times i cannot sell it again so i need to repair them by the people . so that when i try to sell them, i can without any problem . thank you.

You cannot sell an item once it is bound to your character. Items get bound to your character one you do something (kill a monster, gather an item, craft an item) while wearing it.

The answer to your question, however, is that you'd need to level the appropriate DoH class (it says which on each item), then buy the appropriate Dark Matter item, right click the damaged item, and select Repair. Other players cannot repair your gear, only you or the NPCs can.

thank you ^__^