Toy designed for older audiences, such as teenagers or adults, demonstrate advanced concepts. Newton's cradle, a desk toy designed by Simon Prebble, demonstrates the conservation of momentum and energy. Not all toys are appropriate for all ages of children. Even some toys which are marketed for a specific age range can even harm the development of children in that range. "Age compression" is a toy industry term that describes the modern trend of children moving through play stages faster than they did in the past. Children have a desire to progress to more complex toys at a faster pace, girls in
China Energy Conservation and Environmental Protection Group China Energy Conservation and Environmental Protection Group China Energy Conservation and Environmental Protection Group Corporation formerly known as China Energy Conservation Investment Corporation (CECIC) is a Beijing-based state-owned enterprise established in 1988 by the State Council of the People's Republic of China. Its investment portfolio is committed to promoting energy-saving and environmental protection technologies and projects. CECIC has responsibility for 23 billion renminbi of investment in the national energy conservation fund for basic construction projects. It has promoted 13 major energy-saving measures and has completed more than 3,000 large-scale energy efficient and environmental protection projects. The president is Xiaokang Wang.