In this research, the production planning and§scheduling problems in unison with detailed§sequencing activities are addressed for a single§stage, multi-product batch chemical plant in a§parallel machines environment. An integrated§framework for production planning and scheduling of a§single stage multi-product batch processing system§has been developed. The production planning and§scheduling models are capable of handling several§products on a system with sequence-dependent setups.§The hierarchical structure developed integrates three§different planning levels: aggregate production§planning, disaggregation production planning, and job§sequencing. Two main contributions are made by this§research. First, this research suggests a methodology§for solving the batching process activities, as yet§not fully solved by contemporary researchers.§Secondly, an integrated approach to production and§detailed sequencing decisions is proposed.