Non-Hongkong citizens from about 100 countries transiting Hongkong to Shenzhen for travelling purpose can transit without visa and stay up to 114 hours in Shenzhen.
Emergency Number: (86-755) 110
Consultation and Suit Numbers: (86-20) 83119147, (86-20) 83111000 (Office Hour: 8:30-12:00am, 14:00-17:30pm)
Hotline of Exit and Entry Service: 96897 (Direct Line in Guangdong Province, P. R. China)
Website: http://www.gdcrj.com/
Consultation and Suit Numbers in Shenzhen: (86-755) 96897, (86-755) 95000100 (Automation)
Consultation Number of Express Mail Service: (86-20) 11185 (Guangzhou), (86-755) 11185 (Shenzhen)
Website: http://www.sz3e.com