Development and Application of Semi-Automatic PET Stretch Blow Molding Machines: A Comprehensive Review Abstract Polyethylene terephthalate (PET) bottles have become ubiquitous in the packaging industry due to their excellent mechanical properties, transparency, and recyclability. Semi-automatic PET blow molding machines represent a critical segment of the manufacturing equipment market, offering a balanced solution between manual operation and full automation. This paper provides a comprehensive review of semi-automatic PET stretch blow molding...