1. Mold safety.

When choosing a mold, we must see whether the mold has been tested for poison. Is it high quality food grade silicone material? Is it certified by international European standard? Make sure it's safe and non-toxic.

2. Identify by shape and smell

From the appearance, the higher the transparency, the higher the food grade, the food grade silica gel surface is smooth without powder, and it is not easy to deformation, discoloration and warping. The easiest way to identify industrial silica gel is to have a pungent smell of gasoline; Food grade silicone does not have any peculiar smell.

3. Perform high and low temperature tests

In high temperature heating, the mold with low standard will release harmful substances or odors, resulting in poisoning or cancer; And a good mold thermal conductivity and good cold and high and low temperature resistance.

4. Pay attention to the follow-up service of molds

Whether corresponding technical support and solutions are available in the use of silica gel