This study utilized structural equations modeling (SEM) to explore the positive effects of relationship learning and absorptive capacity on competitive advantages of companies through their innovation performances in Taiwanese manufacturing industry. The results of this study showed that relationship learning and absorptive capacity positively influence upon innovation performances of companies, and further have positive effects on competitive advantages of companies. In addition, this study divided the sample into three groups by the levels of relationship learning and absorptive capacity and found that there was a significant difference of innovation performance among these three groups: 'Highly Capable Companies', 'Medially Capable Companies', and 'Lowly Capable Companies'. It is important for 'Lowly Capable Companies' to increase both of their relationship learning and absorptive capacity to enhance their innovation performances. (C) 2008 Elsevier Inc. All rights reserved.