Acer chairman JT Wang on Thursday reaffirmed the company’s dedication to the new “ultrabook” market, further distancing his company from the low-margin netbooks that have dominated its PC lineup in the past. Following the success of Acer’s first-generation ultrabook — the Aspire S3 reportedly shipped between 250,000 and 300,000 units during its first quarter of availability — Acer plans to launch new ultrabook models in both the second and third quarters this year. According to DigiTimes, Wang estimates that Windows and Intel-powered ultrabooks will account for between 25% and 35% of the company’s PC sales in 2012. Wang expects notebook shipment volume to slide between 10% and 15% sequentially in the first quarter, however he expects full-year shipments to grow 10% compared to 2011. While sales in the U.S. and Europe are likely to remain relatively slow according to Acer, the company projects strong sales in Brazil, the Philippines, Thailand and other Southeast Asia markets.