A09 Hebei Zhongxin Drilling Tools Co., Ltd.
A11 Wuxi Ruizuan Drilling Tools Co., Ltd.
A12 Langfang Baiwei Drill Co., Ltd.
A13/A14 Hangzhou Runlitong New Material Co., Ltd.
A15 Poclain Hydraulics (Shanghai) Co., Ltd.
A17 Qingdao Changsheng Fender Airbag Co., Ltd.
A20 Renqiu Boyue Engineering Technology Co., Ltd.
A23 Shandong Runda Bentonite Co., Ltd.
A25/A26 Hangzhou Xiaobao Non-metallic Materials Co., Ltd.
A27 Yancheng Jia Tian Machine Co., Ltd.
A29 Jiangyin Liangwei Machinery Manufacturing Co., Ltd.
A30 Wuxi Octopus Trading Co., Ltd.
A31 Nanjing Zhenglv Instrument Co., Ltd.
A32 Shanghai Vimap Technology Co., Ltd.
A33 Tianjin Yitong Science And Technology Development Co., Ltd.
A34 iMPREG (Suzhou) Co., Ltd.
A35 Qingdao Yu Sheng Guang Yuan Ship Supplies Co., Ltd.
A50 Shenzhen Sense HDD Co., Ltd.
A51 Yuzhou Longde Pump Co., Ltd.
B01 Hebei Sandeng pump industry Co., Ltd
B03 Hengyang Zhongdi Equipment Prospecting Engineering Machinery Co., Ltd.
B04 Tianjin Bowei Zhongtian drilling tools Co., Ltd
B05 Huangshan Golden Land Electronics Co., Ltd.
B06 Jiangsu Dilong Heavy Machinery Co,. Ltd.
B07 Guangzhou T-Probe Equipment Co., Ltd.
B08 Hejian City Feilong Retop Rock Bit Manufacture Co., Ltd.
B09 Wuxi Lushun Drilling Tools Co., Ltd.
B10 Kes Energy Machinery Manufacturing Hebei Co., Ltd.
B12 Jiangsu Elephant Machinery Co,. Ltd.
B13 North Zhongxing (Beijing) Mechanical Drilling Tools Co., Ltd. Xuanhua branch
B14 Nanjing Lama Electronic Instrument Co., Ltd.
B16 ：Shanghai Itrak Trading Co., Ltd
B17 Wanxing Bentonite Co,. Ltd. ln Jianping
B18 Yangzhou Dawn Drilling Tools Co., Ltd.
B21 Liaoning Jin'ao Fuyuan Mechanical Equipment
B23 Langfang Moray Drilling Tools Co., Ltd.
B29 Tianjin Ruilike Engineering Machinery Co.Ltd.
B32 Shandong Delian Equipment Technology Co., Ltd.
B37/B38 Hebei Cangwei Environmental Technology Co., Ltd.
C01 DW/TXS Construction Equipment(Beijing) Co,. Ltd.
C02 Vermeer Tianjin Manufacturing Co., Ltd.
C04 Drillto Trenchless Co,. Ltd.
C06 Anhui Tangxing Equipment Technology Co., Ltd.
D01 Nanjing Steton Engineering Machinery Co,. Ltd.
D02 Zhejiang Jingke Power Technology Co., LTD. / Suzhou Xinrui Alloy Tools Co., Ltd
E01 Shenzhen Anxin Mining Co., Ltd.
E02 Renqiu Xiangli Trading Co., Ltd.
E03 Dezhou Hengnan Machinery Equipment Co.,Ltd.
E04 Wuxi Ruilin Drilling Technology Co., Ltd.
E05 Cangzhou Great Drill Bits Co,. Ltd.
E06 Langfang Pangolin construction machinery Co., Ltd.
E08 Jinan Xinsanda Plastic Pipe Welding Equipment Co.,Ltd.
E09 Hejian City Longyue Drill Manufacturing Co., Ltd.
E10 Renqiu Chengfa Petroleun Technology Co., Ltd.
E11a Cangzhou solid drilling equipment technology Co., Ltd.
E11b Jingzuan (Beijing) Bentonite Technology Development Co., Ltd.
E12 Hangzhou Zhongrun Bentonite Technology Development Co.,Ltd
E13 Hebei Solidkey Petroleum Machinery Co., Ltd.
E18 Changzhou Xinruide Instrument Co., Ltd.
F01 Yangzhou Dilong Machinery Co., Ltd.
F02 Zhejiang Baokun Machinery Technology Co., Ltd.
F03 Anhui Zhuoke Intelligence Equipment Co,. Ltd.
