Extended data:
Etc and OBU equipment of CCB:
OBU is actually a machine similar to the air controller, which needs to be installed in the cardholder's car. It is usually placed on the front windshield near the rearview mirror base, which is as big as a cigarette case. It is powered by solar energy without external power supply. Moreover, ETC card and license plate are interrelated, and the management of one car and one card is implemented. Owners are not allowed to disassemble OBU equipment to other vehicles without authorization.
Witness: China Construction Bank Shanghai Branch.