The deputy major-Qiang Liu, deputy secretary general-Yang Ai and other municipal leaders visited Porton Changshou site (WS102) on Apr. 13th, 2015. The general manager Andrew Xu and vice general manager Victor Cao accompanied and introduced the business type, and the status of development and safety control. The leaders praised the development and management of Porton and gave advices on the transference of patents and others. They also expected Porton to keep well continuously on safety aspect under the leadership of company management.