At present the product of about 4000 , including nearly 1000 kinds acids, aldehydes nearly 200 kinds,contains boron compounds nearly 100 kinds, pyridine, pyrimidine, [b] thiophene, Margaret, sulfonated and pyrrole.the output, indole etc heterocyclic compounds nearly 400 kinds. For a long time, take the quality as this customer first the development way as before to the medicine, the agricultural chemicals, new materials, and other fields of science and technology workers provide high quality service!