Beijing SPC Environmental Protection Tech Co. Ltd., (SHE:002573) renowned for its leading technology, impressive achievement in its high-tech electric power environmental protection comprehensive services, is mainly engaged in investment to, R&D and design of, and installment and operation of flue gas desulfurization and denitration facilities in Large-scale coal fired power plant. 
The best performing sub-indices for the month were the China Efficiency Index with a 28.9% gain and the China Waste Index with a 19.8% gain. The two weakest sub-indices through May were the China Solar Index with 24.2% loss on the back of the issues at Hanergy and the China Hydro Index with a 5.7% loss.
The cleantech sector is fundamentally different to Socially Responsible Investments (SRI) or Environmental, Social and Governance (ESG) performance. SRI and ESG look at incremental improvements in company performance and can be seen as 'operational hygiene' measures that find the best in class. Cleantech focuses on companies whose output positively enhances the communities and ecologies in which they reside. It is about doing 'more good' rather than 'less bad'.
The China CleanTech Index provides the definitive measure of the performance of Chinese cleantech companies that are listed on stock exchanges around the world.
The China CleanTech Index provides the definitive measure of the performance of Chinese cleantech companies that are listed on stock exchanges around the world.
The China CleanTech Index rose strongly in May 2013 to continue its strong performance for the year. Over the month, the Index outperformed all but one of its four benchmarks.
