Beijing Water Business Doctor Co., Ltd (SHE:300055) is involved in the provision of all-around and whole life cycle services for industrial water treatment systems of large scale projects in coal chemical industry, petrochemical industry and power industry, among others. The Company is primarily engaged in water supplying, water drain, reclaimed water recycling and water system operation integrated planning. 
With over 160 companies falling under the coverage of the Index and with a combined market capitalisation of over 2.2 trillion Renminbi (US$370 billion), the China CleanTech Index presents a picture of the Chinese cleantech industry's growth in a single measure.
The China CleanTech Index outperformed all of its four benchmarks for the month of March 2015 and recorded a huge gain of 16.2%. This was driven by both strong gains across all Chinese stocks and the positive government sentiment towards environmental initiatives expressed at the National People's Congress.
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.
