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Beijing ZhongRuiZhiCheng Technology Co., Ltd.
Shanghai Jinghao International Trade Co., Ltd.
Xiuyan Precision Instrument Factory
Minsen Meter Co., Ltd.
Ningbo Huashun Instrument Co., Ltd.
Shenzhen Sunyuan Technology Co., Ltd.
Qingdao Hiwits Meter Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Wenzhou Luosimeng Machinery Co., Ltd.
Shanghai AEAD Technology Co., Ltd.
Zhongshan Sani Measuring Instruments Co., Ltd.
Guangzhou Basic Intelligence Technology Co., Ltd.
Ningbo Yonggang Instrument Co., Ltd.
Rigchina Group Company
Jinhu Hanton Instrument and Meter Co., Ltd.