What conveyor belts are generally used in the food industry

What are the characteristics of the conveyor belt in the rough machining stage? The rough processing environment is relatively poor, mainly due to the large volume of transportation. It is necessary for the conveyor belt to have good durability and weather resistance. When picking fruits and vegetables, thicker PVC conveyor belts are generally used. The main reason is that fruits and vegetables are heavy and suitable for rough processing.
In the finishing stage, the conveyor belt is in direct contact with the food, and there may be oil. Therefore, in the finishing stage, most of them use PU conveyor belts. Most production lines of bread, steamed buns, and steamed buns use PU conveyor belts, and the main colors are mainly white and blue.