For cross-border procurement, the machine must carry a CE Certification if importing to Europe, or comply with UL standards for the North American market. Ensure the supplier provides an ISO 9001:2015 certified manufacturing process. Safety features are non-negotiable; the machine should include emergency stop buttons, protective shielding for moving parts, and infrared safety sensors to prevent operator injury. Always request a noise level report, as industrial knitting machines should ideally operate below 85-90 decibels.