VTech Communications Ltd.,23/F, Tai Ping Industrial Centre, Block 1,57 Ting Kok Road, Tai Po, N.T.
1801, 26 Des Voeux Road C.
13 / F Gloucester Road
12 / F, Sang Woo Building, 227-228 Glloucester Road,
Suite 502, 273-279 Un Chau Street, Cheung Sha Wan,
14 / F. , Caltex House
On Hong Commercial Building,