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Shenzhen Sunyuan Technology Co., Ltd.
Yueqing Haixin Electronic Science Technology Co., Ltd.
Beijing GFUVE Electronics Co., Ltd.
Cheemi Technology Co., Ltd.
ANHUI WNK ELECTRONIC ENGINEERING CO., LTD.
Xi'an Tosilon Automation Co., Ltd.
Hebei Xukang Meter Manufacturing Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.