Tianjin Shengji Group, Inc. Corp.
Jiangmen Bingfa Machinery Equipment Co., Ltd.Guangdong Sheng, China
Techmedica, Inc.California, United States
Xiangyang Guowang Composite Insulators Co. Ltd.Hubei Sheng, China
Southeast University - Wuxi Institute of Integrated Circuit Technology
Euromed Srl
Ningbo Zhongchen Auto Parts Co Ltd.Zhejiang Sheng, China
CONTUBE Conical Tubes GmbHGermany
Edscha Automotive Components Co., Ltd.
DUOBACK Co., Ltd.South Korea
SR Labs, Inc.California, United States
Zhejiang Yuxin Jupan Industrial Co. Ltd.