This study aims to explore the determinants and relative contributions of different types of research partnerships among Chinese firms. Using a large sample of innovating firms, it is found here that factors that determine the needs of the firms for external research and development (R&D) resources and the ability to utilize the knowledge learned through partnerships (i.e., firm size, industrial sectors, internal R&D intensity, and foreign competition) are major antecedents for research partnerships in China. In addition, these factors are found to have different effects on three different types of research partnerships, which, in turn, have different effects on product innovation and patent innovation. (JEL O32)