following relent standards and instructions from automobiles manufactures:

standrad of Volkswagen   TL-680, TL-52361

standrad of American General Motor  GEM13001

International Standards  ISO 4081-1987

Japanese Standards   JIS D2602-1999

Standard of Mitsubishi, Japan

Standard of Suzuki, Japan

can be made according to per your requirements.

OEM is offered, ODM is offered.