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Wincom Company Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Shanghai Boqu Instrument Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.