When evaluating a kitchen sponge making machine, you must prioritize production capacity (output per hour) and material compatibility. Ensure the machine can handle various densities of polyurethane (PU) foam, cellulose, or scouring pad materials. Key technical components include the PLC control system (preferably Siemens or Delta) for precision, the cutting accuracy (tolerance within ±0.5mm), and the heating/bonding method (flame lamination vs. adhesive-based) to ensure the scouring pad and foam do not delaminate during use.