Generally, there are trademarks, and the normal production of calligraphy is non-toxic. Generally, handmade books are printed in factories, and the materials used are only paper and printing ink. If the products are qualified and the materials used are qualified, the handwriting can't be toxic. Generally, poisonous things may be food, but as stationery, handwritten books can't be poisonous.

The publication book can be used for cutting and storing tape conveniently, and can also be used as a picture book.