Try not to fill with boiling water. "No. 7" represents PC and other plastics. Do not heat when using and do not expose to direct sunlight.

1. Commonly used in: kettles, cups, and baby bottles.

No. 2 and No. 7 plastics are controversial because they contain bisphenol A. If a small amount of bisphenol A is not converted into the plastic structure of PC during the production of PC, it may be released into food or drinks. So, caution is the rule and take extra care when using this plastic container.

3. Number 7 OTHER means they are made of other plastics. If such containers are damaged, they should be stopped from use because the tiny pits on their surfaces can easily hide bacteria.

Extended information

1. Each plastic container has a small ID card - a triangular symbol, usually at the bottom of the plastic container. There are numbers 1 to 7 inside the triangle. Each number represents a type of plastic container. They are made of different materials and have different taboos on use.

2. Plastic product recycling labels are formulated by relevant agencies in the U.S. plastics industry. This set of signs puts plastic material identification codes on containers or packages, ranging from No. 1 to No. 7, so that people can easily join the recycling process without having to bother to learn the similarities and differences of various plastic materials.

Reference materials

The secret of numbers at the bottom of plastic bottles Which plastic bottles are safe? --People's Daily Online