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Shanghai Jinghao International Trade Co., Ltd.
Yuyao Zhenxing Flowmeter Instruments Factory
Shanghai AEAD Technology Co., Ltd.
Zhejiang Sealand Technology Co., Ltd.
Beijing ZhongRuiZhiCheng Technology Co., Ltd.
Guizhou Pilot Precision Instruments Manufacturing Co., Ltd.
Changzhou Magstar Machinery Technology Co.,Ltd
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.