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Tianjin Grewin Technology Co., Ltd.
Pego Group (HK) Co., Limited
Beijing GFUVE Electronics Co., Ltd.
Xiamen Goldenbridge Imp. & Exp. Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Nanjing Kehua Instrument & Meter Co., Ltd.
Shenzhen Sunyuan Technology Co., Ltd.
Luoyang Bearing Science & Technology Co., Ltd.