This article compares three common plastic materials used in bottle manufacturing: PET (Polyethylene Terephthalate), PE (Polyethylene), and PP (Polypropylene). It outlines each material’s properties, typical uses, advantages, and disadvantages. PET is known for its clarity and strength, PE for its cost-effectiveness and flexibility, and PP for its heat resistance and food safety. The guide also provides practical selection tips based on product requirements, budget, sustainability, and regulatory compliance—helping manufacturers choose the best material for their packaging needs.