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Shandong Dongrun Instrument Science and Technology Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Wincom Company Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
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Nanjing Kejie Analytical Instrument Co., Ltd.
Wuxi Huizhou Fishery Machinery Co.
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Fuzhou DIT Industry & Trade Co., Ltd.