These "logos" were developed in China 2,000 years ago. They may record the time and location of the creation as well as artisans, and may also very well be among the world's earliest trade marks.
Video: Center for Language Education and Cooperation, Chinese Ministry of Education
Festivals & Cutoms
Lishan Torch Festival concludes in Chongqing, draws over 100,000 visitors
Festivals & Cutoms
Zhengding Folk Art Performance draws 30 troupes for Lantern Festival