The present study aimed to provide a framework for identifying the determinants affecting the export development of nanotechnology products of knowledge-based companies in the construction industry. Methodologically, the research was conducted qualitatively using a grounded theory approach. Data collection was conducted through document review and interview. The purposive and snowball sampling continued until theoretical saturation. The data analysis results were obtained in three steps of open, axial, and selective coding. During the open coding process, categories such as causal, contextual, intervening factors, strategies and actions, and consequences of export development of nanotechnology products were extracted. Then, in the axial coding stage, a link between these categories was identified within the coding paradigm. In the selective coding stage, all components of the coding paradigm were explained, and the theory was developed. After the coding process, the main categories were extracted by conducting fifteen in-depth and semi-structured interviews with practitioners and experts of nanotechnology knowledge-based companies in the construction industry. The benefits of exporting knowledge-based products and services made this a strategic issue for the industry. According to the results, the export of knowledge-based products and services had benefits, including job creation, wealth creation, economic prosperity, comprehensive corporate development, synergy, and increased exports.
