How to remove the rust stains on students' school uniforms? After the clothes are stained with iron stains, you can use 2% oxalic acid solution to wash them in warm water at about 50 ℃, and then rinse them with clean water. Grind 3-4 vitamin C tablets into powder, sprinkle them on the wet clothes, and then rub them with water for several times to remove rust stains. In case of rust aging, use 10% oxalic acid, citric acid and water mixture to soak the rust stained place, then soak it in concentrated salt water, and wash it after 1 day.
How to remove crab roe, fudge and ice cream stains? / BR crab roe stains: rub the white gills of cooked crab and then wash them with soap in cold water. Soft candy stains: you can scrape the bubble gum with a knife first, then take the egg white and wipe it loose on the ruins, then wipe it one by one, then wash it in soapy water and rinse it with clean water.
Ice cream stains: new stains can be washed with washing powder and warm water solution, and rinsed with clean water after 30 minutes. After the stain is removed, wash it with soap or detergent and rinse it with clean water.
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In order to reduce the occurrence of students' traffic accidents, 3M reflective strips can be added to students' school uniforms: the reason why reflective materials can reflect light is that reflective materials contain a high refractive index glass bead or microcrystalline lattice structure, with thousands of micro units arranged in each square centimeter.
Because of their existence, the light can be reflected back to the light source according to the original way, so that the observer near the light source can clearly see the target. If you have other questions, you can call our company.
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