Melamine tableware is usually divided into three grades: A1, A3 and A5:
A1: also known as urea-formaldehyde resin, cannot be used for tableware because its chemical stability is relatively poor and it is easy to release harmful substances during use.
A3: contains some melamine and formaldehyde, cannot be used at high temperatures, and long-term use may pose certain safety hazards.
A5: 100% melamine resin, a high-quality material that can be used for tableware, has good heat resistance, corrosion resistance and stability, and can ensure safety under normal dining conditions.
When purchasing melamine tableware, it is recommended to choose A5 products to ensure safety in use