JIS

Cellulosic papers for electrical purposes -- Part 3-1: Specifications for individual materials -- Electrical insulating paper (Foreign Standard)
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2010

Pressboard and presspaper for electrical purposes -- Part 3-1: Specification for individual materials -- Pressboard (Foreign Standard)
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2010

Balanced biaxially oriented polyethylene terephthalate films used for electrical purposes
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2020

Non-cellulosic papers for electrical purposes -- Part 3: Specifications for individual materials -- Sheet 4: Aramid fibre paper containing not more than 50 % of mica particles (Foreign Standard)
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2016