Found this company during one of the telecom exhibition.

This product will take the 3G mobile phone signals for the outside and repeat it indoors. This way we can get great 3G signal quality indoors.

Product name: ZDW Pico Repeater

Company selling it in Singapore is,

Quad Integration Pte Ltd
21 Bukit Batok Crescent
#16-71 WCEGA Tower
Singapore 658065
Tel/Fax: 9876 7823
website: http://www.quadint.com

Name: Chew Kok Hin
hp: 9858 8985
email: kokhin<at>quadint<dot>com