Compared with those service type hydro-technical automation and environmental protection enterprises, our company has been always in close technical cooperation with famous universities and colleges, so we not only have the superior advantages concerning the R &D and design related to hydro-technical automation and environmental protection engineering but also we have core manufacturing technology with our own intellectual property right, excellentconditions for experiment and testing as well as high capability for supplying complete systems and equipments, as the result, the production cost of our company is much lower; compared with those manufacturing enterprises for hydro-chemical automation and environmental protection, our company is one of the several companies in China currently that can produce complete hydro-chemical automation and environmental protection equipments, in addition, we have the full capability for engineering design and project construction etc. And the complete system we produce features full automation, standardization and seriation with energy-saving technology close to the level of similar products in foreign countries.