Nanban boosters

Gamma server has Nanban Trade exchange ratio of 3:1. This means that for good trade you are going to receive only 1 East Asia good for each 3 goods you bring. This is painful but you can use the following boosters to increase this ratio:

 
 
Nanban Purveyor Certificate multiplies amount of goods received from single trade by 3. When you use it your base ratio for good trade is going to raise from 3:1 to 1:1. For 1 good you bring you are going to receive 1 East Asia good.
 
Nanban Purveyor Certificate is paid item and can be bought from in-game shop.
 
 
 
 
New Nanban Permit Bill allows to perform another Nanban trade without resetting port (i.e. leaving and coming back)
 
New Nanban Permit Bill is paid item and can be bought from in-game shop.
 
 

Nanban Trade Preference skill

 
Nanban Trade Preference skill is ship optional skill which increases amount of Nanban goods received by 20%. It is available on the East Asia origin ships like: Siam, Tarukaisen, Ningbo Ship, Higaki Kaisen, Fu Ship, Sha-chuan, Sagyeonseon, Wide Ship, Nippon-Mae, Caoyun. 
 
Please note you have to be using the ship when you perform Nanban Trade. It is not enough to have ship in inventory or to have your aide sailing it.