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Jinan Handa Electron Technology Co., Ltd.
HV Hipot Electric Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Dongguan Haida Equipment Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
WANT Balance Instrument Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Qingdao Tlead International Co., Ltd.