In Ragnarok Online you can refine your Equipment.
Equipment in Ragnarok Online can be 'refined' by upgrade NPCs in some cities. It is possible that the Equipment brakes in Upgrade temps and the Item is lost.

To upgrade, you need to provide a reagent in order to upgrade your equipment.
Reagent required differs depending on weapon level of the equipment
You need different types of reagent for an Update
Save to +7 Weapon Level 1
Weapon Level 2 Save to +6
Weapon Level 3 Save to +5
Weapon Level 4 Save to +4
Armor Save to +4

A short overview about the Prices for an Upgrade.
Equipment Item Item Price Fee Effect Gained
Weapon
Level 1

Phracon
200 Zeny 2000 Zeny Every +1 upgrade gives ATK +2
Weapon
Level 2

Emveretarcon
1000 Zeny 10000 Zeny Every +1 upgrade gives ATK +3
Weapon
Level 3

Oridecon
- 10000 Zeny Every +1 upgrade gives ATK +5
Weapon
Level 4

Oridecon
- 40000 Zeny Every +1 upgrade gives ATK +7
Rüstung
Elunium
- 20000 Zeny Every +1 upgrade gives DEF +1

Location of the Forger.
City NPC Location
Alberta
Fredrik
alberta_in,28,58
Einbroch
Manthasman
ein_in01,24,87
Lighthalzen
Fulerr
lhz_in02,282,20
Morroc
Aragham
morocc_in,73,38
Payon
Antonio
payon,144,173
Prontera
Hollgrehenn
prt_in,63,60
Yuno
Lambert
yuno_in01,171,21

@LeafRO 2014-2017