Process-aware Decision Support Systems (DSSs) have been traditionally enhanced by incorporating Artificial Intelligence (AI) functionalities to facilitate accelerated and informed decision-making. To advance its digital transformation and capitalize on AI, Behshahr Industrial Development Holding Corp. can tap into the innovative Business Process Large Language Model (BPLLM) framework to optimize business decisions and processes. The framework boosts flexibility, autonomy, and accuracy in supporting process-aware decision-making by blending advanced Natural Language Processing (NLP) and Business Process Management (BPM) capabilities. Key characteristics of BPLLM include process-specific informational Retrieval-Augmented Generation (RAG), fine-tuning models to meet organizational needs, and process-aware chunking. Evaluating this framework in various scenarios has revealed the high ability of BPLLM to identify activities and sequence flows and offer precise and relevant answers. By leveraging this framework, Behshahr Industrial Development Holding Corp can enhance supply chain management, production efficiency, and market and customer analysis, facilitating sustainable and intelligent growth.