The Lean and SLP-based operations model addressed inefficiencies in packaging and order preparation for chemical trading SMEs. Previous research showed that Lean Manufacturing and Systematic Layout Planning (SLP) improve operational efficiency, though their use in chemical trading SMEs had been limited. The main challenges were delays and defects that affected customer satisfaction.

This study applied Lean tools, including SLP and 5S, along with standardized work processes to optimize layout, reduce delays, and eliminate defects. These actions improved workflow, consistency, and operational performance.

Key results included a 32.09% increase in the On-Time In-Full (OTIF) rate, an 82.35% reduction in packaging defects, and a 73.33% decrease in cylinder location delays, demonstrating the model’s effectiveness.

The research made significant contributions by enhancing operational performance and reducing costs, leading to increased customer satisfaction and long-term competitiveness.

Further research should explore the model's adaptability in other industries, promoting continuous improvement and broader applications of Lean principles.