Tokuteiginou （特定技能; designated skills; SSW）visa is the new working visa which started in April 2019.
There are two types of  Tokutei gino, １号 ”Type 1” and ２号 ” Type 2.” 
You are supposed to first get Tokutei gino Type 1, and then change to Type 2 if conditions met in 2 industry fields.

Click here to read. 

Those who finished technical internship training successfully could get test (language and skill) exempt.  

There are basically two ways to prove that you finished your technical internship training successfully:

1. Passing Gino Kentei 3 kyu (trade skill test grade 3) or equivallent (such as Senmoknyu, professional level).

2. Getting an evaluation letter from the former company.

In order to be eligible for SSW visa (Tokutei gino visa), you need to pass the Japanese language test, Skill test in the target industry and get a job offer.

 
Note: extrainees who completed 3 year training in Japan with 3rd grade skill certificate are exempted from tests.

There are 14 industry fields for the new working visa and policies and requirements are different for each field. 

So it is important for you to get the right information for your target field. 

Click  to read. 

Each post is rather long.   But please read carefully till the end in order  to grab the right information.