Are food-grade oils toxic? Can you elaborate on it?

Food-grade grease must have food-grade safety certification NSF H 1 to ensure the safety of human body and environment. The following types of food fats and oils are usually used as reference:

(1) Common food grease for high-temperature food equipment, such as drying furnaces: high-temperature food machinery grease, from Shanghai Hutou HOTOLUBE.

(2) Common food grease for sealing lubrication: lubricating silicone grease, Shanghai Hutou Haote lubricating oil.

(3) Common food grease for open gears of food equipment: Shanghai Hutou HOTOLUBE fully synthetic high-temperature universal grease.