What should I do if the plastic cup is dyed? How to remove the dyed white plastic?

1. Apply toothpaste evenly to the dyed area for about 5 minutes, then scrub it with a wet towel or brush the dyed surface with a toothbrush.

2, the origin of plastic bags: plastic bags A photographer's experiment in a darkroom led to the first plastic. In the 1950s of 19, Parks studied different methods to treat collodion. One day, he tried to mix collodion with camphor. To his surprise, a flexible hard material was produced after mixing. Parks called this substance "Paxsin", which was the earliest plastic.

3. Harm of plastic bags: Because plastic bags are mostly non-renewable degradable materials, the plastic structure is stable, which is not easy to be degraded by natural microorganisms and will not be separated in the natural environment for a long time. It will do great harm to the land, change the pH value of the land and seriously pollute the soil. It affects the absorption of nutrients and water by crops, leads to the reduction of agricultural production and affects the sustainable use of land. Harmful smoke and toxic gases produced by incineration will also pollute the atmospheric environment.