The document describes 3 case studies of manufacturing companies that faced challenges like late deliveries, high work-in-process levels, and stagnating profits. In each case, Hybrid Consulting helped identify and improve the bottleneck in the production process, leading to substantial increases in throughput and capacity with minimal costs and disruption. Improvements like reducing work-in-process, standardizing procedures, and ensuring continuous operation of constraints allowed the companies to consistently deliver on time, increase profits over 1000%, and grow their businesses without extra staff or equipment.