What does the bottom of the plastic cup stand for, and what does the case at the bottom of the plastic cup stand for?

1, "7"-as (acrylonitrile-styrene resin), PC materials and others. Used in po

What does the bottom of the plastic cup stand for, and what does the case at the bottom of the plastic cup stand for?

1, "7"-as (acrylonitrile-styrene resin), PC materials and others. Used in pots, cups, milk bottles, etc. High safety, fall resistance, but not high temperature resistance. Drinking cold water is harmless, but if you drink hot water, it will produce harmful substances after heating. Therefore, everyone must pay more attention when using it as a plastic cup.

2. "1"-pet (polyethylene terephthalate). More common in mineral water bottles and beverage bottles. This material is heat-resistant to 70℃, can be filled with normal temperature water in a short time, and should not be mixed with acid-base drinks or high-temperature liquids, nor should it be exposed to the sun, otherwise it will produce toxic substances harmful to human body.

3. "5"-PP (polypropylene). PP plastic water cup is made of polypropylene, which has good thermal stability and thermal insulation, and is safe and harmless to human body. The product can be sterilized at the temperature above 100℃, and will not deform at 150℃ without external force, and there is no pressure when filling with boiling water.