On Nov.12^th, 2008, a 13-member delegation from Siemens (China) Corporation, paid a visit to RCEES. Professor Qu Jiuhui, Director of RCEES, met with the delegation members. Both sides exchanged ideas about research and application of technologies for arsenic removal from drinking water, research and development of inorganic polymer flocculants, and technology for environmental catalysis and purification, and hope to have a deep exchange about further cooperation areas and ways in future.