| ¡¡¡¡ Yuda Chemical Industry Co., Ltd. was founded in 1993.
Its main product is Colloidal silica, and it has been
the largest manufacturer to produce colloidal silica in
China for six years.
¡¡¡¡Besides colloidal silica, Yuda is very interesting
in nanometer material, such as nm-SiO2, nm-TiO2, nm-Al2O3,
nm-ZnO, nm-CaCO3, nm-Fe2O3, nm-Fe3O4, and nm-up etc.
Now, the nm-SiO2(nanometer silica powder) and the nm-UP(nanometer
unsaturated polyester resin) have been manufactured
in Yuda. Both of them are high-tech products, and the
patents of them have been applied in China.
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