Selecting the correct machine depends on the material and process. For PVC or TPR sandals, an Air Blowing Injection Moulding Machine is essential to achieve lightweight and soft textures. If you are producing EVA sandals, you must prioritize EVA Foaming Injection Machines which handle high-pressure expansion. For traditional leather sandals, look for Outsole Pressing Machines and Industrial Stitching Units. Always verify the clamping force and shot volume to ensure they match your specific mold sizes.