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Yuyao Gongyi Meter Co., Ltd.
Zhejiang NCR Industrial Co., Ltd.
Shenzhen Sunyuan Technology Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Ningbo Shunjay Instruments Co., Ltd.
Nanjing Kehua Instrument & Meter Co., Ltd.