Different materials have different characteristics, so it is not easy to say which kind of sealed tank is better. At present, the storage and sealing jars on the market mainly use two materials: glass and plastic, each with its own advantages and disadvantages.

Glass material, the advantage is that it is safe and non-toxic, suitable for long-term use, and the glass jar is transparent as a whole, very beautiful and beautiful; but the disadvantage is that it is heavy and fragile, and needs to be handled with care. Common lead-free glass is generally used for sealing cans, such as soda lime glass which is not thermal shock resistant, and high borosilicate glass which is not thermal shock resistant.

The biggest advantage of plastic material is that it is light, easy to use, and will not rust; but the disadvantage is also obvious, that is, there is an aging problem, and it is easily deformed by heat, so if it is used for more than 2 years, it is better to choose glass. Among the plastic materials, PP and PET are generally used. PP is the most common and is also a special plastic for making microwave ovens. PET is the material used for mineral water bottles, which is easy to become soft when heated.

In terms of safety, the above two materials, as long as they are produced by regular manufacturers, generally do not contain excessive harmful substances, which can be considered harmless, so choose the more common big brand storage when purchasing. Cans will be more reliable.