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Shenzhen Sunyuan Technology Co., Ltd.
Beijing GFUVE Electronics Co., Ltd.
Beijing ZhongRuiZhiCheng Technology Co., Ltd.
Cheemi Technology Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Yueqing Haixin Electronic Science Technology Co., Ltd.
Xi'an Tosilon Automation Co., Ltd.
Hebei Xukang Meter Manufacturing Co., Ltd.