Zhang Lijuan について
Dep. of Environmental Engineering, Environment Management Coll. of China, Qinhuangdao について
Chang Haiping について
R&D Dep., Dicastal Wheel Manufacture Co., Ltd., Qinhuangdao について
Li Guohui について
Dep. of Environmental Engineering, Environment Management Coll. of China, Qinhuangdao について
Zhizao Jishu Yu Jichuang について