North China Electric Power University professor, Beijing Environment and Development Commission member, an important national science & technology specific project leader Huayong Zhang visited our company on October 30th 2009. 

As an expert in River and Lake ecosystem remediation researches, Professor Zhang appreciated Tuofeng's contribution in industrial wastewater treatment. He mainly visited our coking wastewater, straw pulp and paper making effluent and PVC mother solution treatability test laboratories as well as demonstration of coking wastewater advanced treatment process, and delivered his compliments.