The world is not only hungry but also thirsty. However, some people are still reluctant to turn a finger to save water. Some people don’t turn a tap after use, while others even pollute clean water. The severe drought in the southwest China once again pushes the issue of water-saving under hot discussion. However, as things stand today, the reasonable utilization of water resource is more significant than before. Firstly, the quick development of commerce and industry will consume more water ...
