When sourcing for Pakistan, prioritize voltage compatibility (220V/50Hz single-phase or 380V three-phase) to match local industrial standards. Look for machines with food-grade 304 stainless steel construction to ensure hygiene and durability. Key performance metrics include the oil extraction rate (aim for >95%) and the residual oil rate in the cake (should be <6%). For versatility in the Pakistan market, ensure the machine can process local seeds like mustard, rapeseed, sunflower, and cottonseeds.