5 years ago, Ningbo Yi Xin Chen Electrical Appliances Co. LTD had decided to develop energy saving lights. Now, this non-public enterprise has the capacity to produce over 30 million of outdoor solar energy lights per year. Output reaches 250 million Yuan---which is No. 1 in China. In past two years, Yu Yao invested 1 billion to energy saving circle every year and developed products of saving electricity, gas, coal and new energy resources and products for buildings and vehicles. In Yu Yao, there are over 30 large energy saving enterprises. Sales of all enterprises exceed 5 billion, up 20%.