Our restaurant's iron griddle equipment is NSF-certified, with NSF being the World Health Organization (WHO)-designated international certification authority in the field of food hygiene and safety. The steel materials have all undergone heavy metal (lead, chromium, arsenic, nickel, etc.) leaching tests to ensure that no harmful substances are released during high-temperature cooking and rapid thermal expansion and contraction processes. The cost of the iron griddle equipment is 2-3 times that of general commercial products, aiming solely to ensure your safety and health. Fong Fan adheres to the strictest quality control for both equipment and ingredients for our customers. Fong Fan's dedication ensures your peace of mind, so you can dine with confidence. (Excerpt from official website)