China 'GB/T 20501.6-2013
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20501.6-2013
Public information guidance systems - Design principles and requirements for guidance elements - Part 6: Direction sign 公共信息导向系统 导向要素的设计原则与要求 第6部分:导向标志
Issued Date:2013-07-19
Implemented Date:2013-11-30
Issued by:
The Standardization Administration of the People's Republic of China