摘要
The urgency of water shortage will be at its peak whenever a massive drought occurs inany place. For instance, currently the severe drought has hit Yunnan, Guangxi, Guizhou, Sichuan provinces and Chongqing in southwestern China and affected more than 50 million people, leaving about 16million without adequate drinking water. Under such circumstance, manufacturers of industrial products are put under the spotlight as they are regarded as one of the key users of water.