
Cambridge Sensor Innovation Ltd.Lancashire, United Kingdom

Chongqing Sanzhen Building Materials Co., Ltd.Chongqing Shi, China

East End, Inc.

Shanghai Kaishen Fire Equipment Installation Co., Ltd.Shanghai Shi, China

Shanghai Haixiong Electric Complete Equipment Co., LtdShanghai Shi, China

Dongguan Macson Electronics Co. Ltd.Guangdong Sheng, China

Hangzhou Sciener Intelligent Control Technology Co., Ltd.Zhejiang Sheng, China

Fenzhong (China) Information Technology Co., Ltd.Shanghai Shi, China

Fwu Kuang Enterprises Co. Ltd.

Takemoto Oil Co. Ltd.

Fushun PetroChina Testing Engineering Co., Ltd.Liaoning Sheng, China

Bengbu Kunyu Machinery WorksAnhui Sheng, China