泸州表面血管结扎止血模型-【嘉大嘉拟】，嘉大智创,西安足底解剖及足底动脉分支模型,忻州高级动脉血气分析训练模型,上海心肌纤维模型,辽宁智能型网络多媒体儿童胸腹部检查教学系统(学生机),哈尔滨颈椎附脊髓与脊神经放大模型,新疆透明肺段模型
China has been engaged in the construction of self-driving infrastructures to enhance safety and efficiency in test rides. Beijing added a new area of 40 square kilometers for testing self-driving cars carrying passengers on Dec 30 last year. The city has opened 151 roads with a distance of about 503.68 kilometers for autonomous driving, ranking first in the country.
China has also built a total of 21 economic and trade cooperation zones within the territory of the SCO countries, making contributions to expanding local employment and increasing tax incomes.
China has an expanding middle-income group sized 400 million out of the 1.4 billion total population, according to Xinhua.
China has become home to Tesla's two largest charging stations in the world, one in Shanghai and the other in Beijing, with each capable of serving 50 cars at the same time, said the company on Wednesday.
China has been carrying out periodic campaigns to address the problem.
来源：资阳报