An Ecuadorian animal feed production company decided to upgrade its existing feed production line to meet the growing market demand and improve product quality. The company primarily focuses on producing powdered feed, but with increasing demand for animal pellet feed, they decided to upgrade their existing animal feed production line to produce pellets with diameters of 2mm, 3mm, and 4mm for pigs. Before the upgrade, the company already had a set of complete production equipment, including crushers, mixers, and two small material bins. However, to meet the new production requirements, they needed to add new equipment, including pellet mills, coolers, mixers, sieves, steam boilers, packaging machines, and bucket elevators. Due to limited funds, they decided to utilize existing equipment as much as possible and only purchase the necessary equipment for the upgrade. Throughout the upgrade process, the company faced numerous challenges and opportunities. Firstly, t...