Stone paper is also called rich mineral paper which is made mainly from dusty stone with 15% percent polyethylene and 5% percent adhesive. This kind of paper is waterproof, hard and uninflammable, and the most important thing is that there is no need to cut trees, which is very environmental.

The paper made from stone looks ordinary from the appearance, but if you write something and immerse it in water for ten minutes, the character is same as before, and the paper still can be written when you make it dry. If you burn rich mineral paper and general paper at the same time, you will find that the general paper burns to the ground quickly , on the contrary, fire of rich mineral paper is becoming smaller and smaller till it puts out.

The technology was developed successfully in domestic in the 1970s. However, it failed to get promoted because of the neglect to environmental protection and the situation of cost at that time. In recent years, rich mineral paper has made some breakthrough in the aspect of technology so that the reversal of cost took place and it is widely used now, such as notebook, paper bags and plates. At the time of taking environmental protection seriously, the technology will draw much attention from people gradually.

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