ABC Communications (Holdings) will have to rely on its mobile phone associate SmarTone Communications Holdings as the engine for this year's profit growth because its investments in other businesses in the region are still in their infancy. Deputy managing director Patricia Yeung Shuk-kwan - with chairman George Ho Ho-chi - yesterday said ABC planned to invest $50 million this year in pager and mobile services in Taiwan but those investments would not be profitable in the first three years of operation. The contribution from the Vietnamese paging business would also be uncertain, Ms Yeung said. In Hong Kong, the high-speed transmission paging service with financial features, QuickSilver, which was launched in March, has started generating slight profits. She said QuickSilver had attracted 4,000 subscribers and she expected the number to rise to 10,000 by the end of the year. 'Under these conditions, SmarTone will provide us with a pretty good source of income. This will be used to fund our investment in Taiwan,' she said. ABC holds 12.4 per cent of SmarTone and takes a share of the company's net profit on an equity-accounted basis. ABC is a member of a consortium, Express Link, which won a pager service licence for the northern part of Taiwan. The company also joins Far Eastone Telecommunications which secured a province-wide personal communication service licence and a northern global system for mobile communication licence. Ms Yeung said the paging and mobile services would be launched in the third quarter of the year.