
Jiangsu Dingda Building New Technology Co. Ltd.

Guangdong Sansan Intelligent Technology Co., Ltd.Guangdong Sheng, China

Shenzhen Jinhaohui Industrial Development Co., Ltd.Guangdong Sheng, China

Shaanxi Linghua Electronic Co. Ltd.Shaanxi Sheng, China

Wellhead Stone Technology Co., Ltd.

Tianjin Yinglin Energy Saving Technology Development Co., Ltd.Tianjin Shi, China

Shenzhen Hypermont Technology Co., Ltd.

Precision Monolithics, Inc.California, United States

Kaiping Hansen Sanitary Ware Co., Ltd.Guangdong Sheng, China

Optical Corp.

Ningbo Seng Cze Macrospray Co., Ltd.Zhejiang Sheng, China

Sinopec Geophysical Corp.