How to prevent and remove rust stains?

1) Adding sodium silicateto the scouring liquid can stabilize the iron content in the scouring water;

2) It can be coated with ethylene oxide resin to prevent rust on the guide roller and cloth roll;

3) If there are rust spots on the fabric, wash it off with warm oxalic acid, and then wash it with water, otherwise it will make the fiber brittle;