The 10th China Patent and High-Tech Products Expo opens inside the grand hall of the Confucius Cultural Exhibitive Center in Jining City, east China's Shandong Province, June 23, 2010. Some 1,400 experts, professors and patent holders and 426 units take part in the fair, which carries the theme of Innovation, Cooperation and Development.

A man learns about the robot for probing the danger under the coal mine well, inside the grand hall at the 10th China Patent and High-Tech Products Expo, which opens at the Confucius Cultural Exhibitive Center in Jining City, east China's Shandong Province, June 23, 2010. Some 1,400 experts, professors and patent holders and 426 units take part in the fair, which carries the theme of Innovation, Cooperation and Development.

Hustle and bustle is seen inside the grand hall at the 10th China Patent and High-Tech Products Expo, which opens at the Confucius Cultural Exhibitive Center in Jining City, east China's Shandong Province, June 23, 2010. Some 1,400 experts, professors and patent holders and 426 units take part in the fair, which carries the theme of Innovation, Cooperation and Development.

A man introduces the automatic tracking and charging system for the photovoltaic battery board, inside the grand hall at the 10th China Patent and High-Tech Products Expo, which opens at the Confucius Cultural Exhibitive Center in Jining City, east China's Shandong Province, June 23, 2010. Some 1,400 experts, professors and patent holders and 426 units take part in the fair, which carries the theme of Innovation, Cooperation and Development.

The opening ceremony of the 10th China Patent and High-Tech Products Expo is held at the Confucius Cultural Exhibitive Center in Jining City, east China's Shandong Province, June 23, 2010. Some 1,400 experts, professors and patent holders and 426 units take part in the fair, which carries the theme of Innovation, Cooperation and Development.

Visitors watch the demo of a robot for probing the danger under the coal mine well inside the grand hall at the 10th China Patent and High-Tech Products Expo, which opens at the Confucius Cultural Exhibitive Center in Jining City, east China's Shandong Province, June 23, 2010. Some 1,400 experts, professors and patent holders and 426 units take part in the fair, which carries the theme of Innovation, Cooperation and Development.

(Source: Xinhua)