The environmental correction pen was researched by ourselves.
We have its directions for producing chemicals.
It is not only no-pollute to environment because it is
water-solubility product which is not include formaldehyde,benzene,
ester,etc. chemical material,but also no-hurt to body,and distance fire.
It is testing by Institute for Environmental Health and Related Product
Safety Chinese Center for Disease Control and Prevention now.

We can supply non-polluting correction pens.