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Shanghai Drawell Scientific Instrument Co., Ltd.
Wincom Company Ltd.
Jinan Handa Electron Technology Co., Ltd.
WANT Balance Instrument Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
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Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Nanjing Kejie Analytical Instrument Co., Ltd.