Hunan Tongtai Engineering Co., Ltd.
Hubei Hechang Xincailiao Science & Technology Co. Ltd.
Pulmotec Gmbh
Jay at Play International Hong Kong Ltd.
Jiangsu Minghe Group Co. Ltd.
Zhushan County Qinba Barium Salt Co. Ltd.
Lab Radio SA
Hongtai Intelligent Technology (Dongguan) Co., Ltd.
Hokuetsu Insatsu KK
Shilian Changyi Huaian Technology Co., Ltd.
Johnson Electric (Shenzhen) Co., Ltd.
Nantong Hetai Communication Technology Co. Ltd.