My package can't automatic sorting and take the materials back to the bank

As the package has a lot functions in Guild Wars 2. You may have a look at below:

Craftsman bag: If space allows, material used for the product will automatically enter the bag, such as, ore, wood, precious stones.

Equipment bag: If space allows, weapons and armor, jewelry will be into the bag automatically.

Invisible bag: Items in this package will not be automatic sorting, and won't be deposited in the bank, also won't appear in the merchant's option to "sell". This bag is very useful, for example, I am an enchanter, I like to wear a pve biggest hurt, and when I went to the WVW. I will change the viability of equipment, and I won't sell items by mistake. 

Oiled bag: Debris items will be automatically into the package, that is the items in selling junk.

So you need to select the package which will help you, and buy some Guild Wars 2 gold to stronger your weapons.

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