Ans: The seven different types of plastics that are commonly used in manufacturing products include: Polyethylene Terephthalate (PETE or PET), Polyvinyl Chloride (PVC), Low-Density Polyethylene (LDPE), High-Density Polyethylene (HDPE), Polypropylene (PP), Polystyrene or Styrofoam (PS), Acrylic or Polymethyl Methacrylate (PMMA).