How has a new staff coming (Indonesia), I will talk a little about the improve of the items.
Many already know, but it is good to leave written!
Normal Item - Improve to +5, has 100% success.
Superior Item - Improve to +4, has 100% success.
Rare Item / Honor Item - Improve to +3, has 100% success.
Note 1 - The Abyss Set, Sealed Relic Hunter and the Truth sets can have bonus as rare, but they are superior to refined 100% to +4.
Note 2 - Of course the percentages are not completely accurate, so as the level is increasing (eg +7, +8, +9 ... +11), the index of chance is less accurate. In other words, the chance to refine an item will never be 1%
Normal Item
Improve Sucess Rate % +1 100 +2 100 +3 100 +4 100 +5 100 +6 66 +7 56 +8 46 +9 18 +10 6 +11 4
Superior Item
Improve Sucess Rate % +1 100 +2 100 +3 100 +4 100 +5 56 +6 46 +7 18 +8 8 +9 1 +10 1 +11 1
Rare Item / Honor Item
Improve Sucess Rate % +1 100 +2 100 +3 100 +4 46 +5 44 +6 42 +7 21 +8 5 +9 1 +10 1 +11 1
All the success rates of 100%, are true. But for other rates, the value may not be exact, so it's always good to use an item that prevents the destruction of equipment.
I hope you enjoy and sorry for my poor English.
See you soon!
Note: If you liked this, give me a Thanks = D