Lenovo Group, bolstered by solid second-quarter sales growth in Asia and other key markets, regained its standing as the world's third-largest personal computer supplier from fast-rising Taiwanese rival Acer. Lenovo, the mainland's dominant PC maker, seized an 8.3 per cent global market share in the second quarter as it shipped 4.879 million PC units, up 22.3 per cent from 3.989 million units a year earlier, according to preliminary estimates from market researcher International Data Corp. That showing was enough for Lenovo to take the upper hand from Acer which had a 7.2 per cent worldwide market share on shipments of 4.261 million PC units in the second quarter. Acer surprised the industry in the first quarter when it posted a 7 per cent global market share against Lenovo's 6.7 per cent to become the world's No3 PC supplier after Hewlett-Packard and Dell. 'Lenovo was penalised by the Lunar New Year holidays in the first quarter, which has always resulted in a seasonal decline in the mainland, its biggest market,' said Bryan Ma, IDC's director of Asia-Pacific personal systems research. IDC credited Lenovo with substantial increases in second-quarter PC shipments to Europe, the Middle East and the United States, and most of Asia for its return to form. Lenovo president and chief executive William Amelio said the firm's branding efforts, such as for the Beijing Olympics, were 'ahead of schedule' in helping generate new sales. Group chairman Yang Yuanqing said Lenovo's growth markets remained the mainland, the consumer and small business segments in mature markets such as the US, and emerging markets in Latin America, Asia and Eastern Europe. Resurgent second-quarter PC sales in Asia boosted its position as the industry's fastest-growing region, according to Loren Loverde, director of IDC's worldwide quarterly PC tracker research. Global PC unit sales in the second quarter reached 58.824 million, a 12.5 per cent gain from 52.297 million units a year ago. Lenovo continued to dominate the Asia-Pacific, excluding Japan, by registering a 20.7 per cent regional market share and 28.2 per cent growth in PC shipments. IDC noted that the mainland's PC market grew 23 per cent sequentially in the second quarter as computer suppliers prepared for the summer sales. PC sales in the Asia-Pacific, excluding Japan, totalled 14.3 million units in the second quarter, a 22 per cent increase from 11.7 million units a year ago.