Nantong Chengfeng Copper Industry Co. Ltd.
Walta Electronic Co. Ltd.
Miltenyi Biotec BV & Co. KG
Windowfactory Albisrieden AG
Jiangsu Hongchen Optical Co. Ltd.Jiangsu Sheng, China
Akira KatoJapan
Shenzhen Precise Testing Technology Co., Ltd.
Zhejiang Guanghui Metal Materials Co., Ltd.
Chongqing Yiman Environmental Protection Equipment Co., Ltd.Chongqing Shi, China
Shanghai Songsheng Electric Technology Co., Ltd.Shanghai Shi, China
Zhaoqing High-tech Zone Tuwa Technology Co., Ltd.
Eugen Notter GmbH