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Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Yuyao Zhenxing Flowmeter Instruments Factory
Shanghai AEAD Technology Co., Ltd.
Shanghai Jinghao International Trade Co., Ltd.
Beijing ZhongRuiZhiCheng Technology Co., Ltd.
Hefei Guang An Logistics Equipment Co., Ltd.
Wenzhou Import & Export United Co., Ltd.
Xiuyan Precision Instrument Factory