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Shanghai Jinghao International Trade Co., Ltd.
Guizhou Pilot Precision Instruments Manufacturing Co., Ltd.
Jinhu Hanton Instrument and Meter Co., Ltd.
Beijing ZhongRuiZhiCheng Technology Co., Ltd.
Yuyao Zhenxing Flowmeter Instruments Factory
Zhejiang Sealand Technology Co., Ltd.
Shanghai AEAD Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Guangzhou Basic Intelligence Technology Co., Ltd.
Xiuyan Precision Instrument Factory