The product is only used as a craft, gift, product display, gift-giving, or decoration. It should not be used for any scientific or common experimental testing purposes. The product has been specially treated with technology, and all elements are very safe and reliable. It does not contain any gases, liquids, radiation, or radioactivity. After being treated with technological means, it does not contain any elements that can cause any harm to the body. Please rest assured to use and sell to our dear new and old customers.The product is only used as a craft, gift, product display, gift-giving, decoration, and cannot be used for any scientific or common experimental test purposes. The product is often treated with special technology, and all elements are very safe and reliable. It is non-toxic, non-gas, non-liquid, non-radiation, and non-radioactive. After treatment by scientific means, it does not contain any toxic substances and has no harm to the body. Please rest assured to use and sell the new and old customers of the speed wheat industry - the original head factory treasure supplies middle school chemistry element period table three-dimensional actual teacher birthday gift creative learning desk decoration middle school chemistry element period table three-dimensional actual teacher birthday gift creative learning desk decoration embedded real objects large/medium/small new version upgrade chemical element period table three-dimensional actual learning desk decoration large/medium/small new version upgrade chemical element period table three-dimensional actual model learning