SciTrendX on Instagram: "Plastic water bottles and jugs start their journey as small preforms that resemble test tubes. In manufacturing, these preforms are heated until soft, then placed into molds where high-pressure air expands them into full-sized bottles. This process, known as blow molding, relies on a precise balance of heat, pressure, and engineering to create durable, lightweight containers capable of holding liquids, stacking neatly in cases, and withstanding the rigors of global shipp