To make entrance and exit of passageways more intelligent.

Beidi Smart Science

Address: No.1, Xingliang East Road, Anli, Leliu, Shunde, Guanddong, China.

Fax：86-757-28888978    Fax：86-757-28891213

TEL: Mr.Ou: 86-13590663388    Michael: 86-13794620389

QQ：101547264   

Hotline：288-883-98