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Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Deson Electric Group Company Limited
Nengshi Analytical Sensor Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Wincom Company Ltd.
Zhangjiagang Sansu Machine Co.,Ltd
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Beijing Topsky Century Holding Co., Ltd.
Shenzhen Lite Technology Limited