On April 14, 2016, Vice Mayor of Qingdao Liu mingjun and his entourage come to SDMall which is invested by JNB and other four companies: Qingdao cross-border electric business incubator base to research work. Provincial Inspection and Quarantine Bureau deputy director Shi Yong, Qingdao customs supervision commissioner Wei Xiaoguang, Qingdao municipal Bureau of commerce Deputy Director Guo Jian and other relevant leaders to accompany the research.