Do you know why trash cans are colored? Let me tell you, the yellow trash cans generally contain medical garbage and metal garbage, the black trash cans generally contain cardboard and other garbage, the blue trash cans contain waste newspapers and the green trash cans are non recyclable, the red trash cans contain glassware, and the coffee trash cans contain waste food.
In life, we can see all kinds of signs to remind people to follow. Generally, the color signs of garbage should be determined according to the name and graphic symbols, but in the process of use, the signs must be clear and complete.
Generally, if there is no specific description, it can be distinguished by color, recyclable and non recyclable. A handful of recyclable garbage is blue and green, while harmful substances are red or gray.
