With the aid of technology of little pill coating,the unified solid chlorine dioxide releaser with high purity and stability is prepared.

Application of small pill coating technique in the manufacture of potassium chloride sustained-release tablets;

Application of coating technique in the preparation of metformin hydrochloride sustained-release tablets;

The polymeric coating technique for inorganic flocculant of polyaluminium chloride was studied.

The princinple of seed-coating technique and its common types were introduced, the function of the technique in seed germination, sowing quality, growth and development of plants and the control of disease and pest was simultaneously summarized.

Also, the advance in application research, the existing problem and developmental prospect of super absorbent polymers was introduced from the aspects of usage, application effects, coating technology and influencing factors in this paper.