Lingfeng Chen,
Changshu Shuangyu Machine Co.,Ltd.Jiangsu Sheng, China
Sichuan Kaiyuan Technology Co. Ltd.
Singapore Nanomaterials Technology Co., Ltd
ETON INDUSTRIAL INNOVATIONS.,LTD.Liaoning Sheng, China
Hebei Huatong Gas Equipment Co., Ltd.Hebei Sheng, China
Yanshi Electronic Technology (Shanghai) Co., Ltd.Shanghai Shi, China
Hebei Jingda Construction Technology Co., Ltd.Hebei Sheng, China
Yongkang Qingwei Industry and Trade Co., Ltd.Zhejiang Sheng, China
Hongkai Photoelectric Shenzhen Co. Ltd.Guangdong Sheng, China
Suzhou Jingxie Machinery Manufacturing Co., Ltd.Jiangsu Sheng, China
Shanxi University of Finance & EconomicsShanxi Sheng, China