Hubei Huayuan Equipment Manufacturing Co., Ltd.Hubei Sheng, China
A.T. Engineering Co. Ltd.United Kingdom
Wuwei County Xinfasheng Auto Parts Co., Ltd.
Jiangsu Saidile Energy Saving Technology Co., Ltd.
Seowon Sanghyup Ltd.
Weihai Sungho Electronics Co. Ltd.Shandong Sheng, China
Pg Toshiba Langfang Arrester Co. Ltd.Hebei Sheng, China
Zhangzhou Wanlida Zhonghuan Technology, Inc.Fujian Sheng, China
Hunan Guoxin Semiconductor Technology Co., Ltd.Hunan Sheng, China
Jiangsu Pain Optoelectronics Technology Co., Ltd.
Ultizyme International Ltd
Jianhu County High Tech Investment Development Co Ltd.