For industrial machinery, the CE Marking is essential for the European market, while UL or ETL certification is preferred for the US. Ensure the supplier provides a Declaration of Conformity and that the machine includes safety features such as emergency stop buttons, protective shielding for rotating parts, and circuit breakers. Additionally, since straws are food-contact items, the machine's contact surfaces must be made of Food Grade Stainless Steel (SUS304 or SUS316) to prevent contamination.