When sourcing an EVA injection molding machine, you must prioritize the clamping force (typically ranging from 100 to 250 tons) and the number of workstations (usually 2, 4, 6, or 8 stations) to match your production capacity. Ensure the machine features a high-precision PLC control system (such as Siemens or Omron) for accurate temperature and pressure management. Additionally, verify the injection volume capacity to ensure it can handle the weight of your largest slipper designs, and look for energy-saving servo motors which can reduce electricity consumption by 30-50%.