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Jinan Handa Electron Technology Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Wincom Company Ltd.
Shenzhen Security Electronic Equipment Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Hangzhou Lohand Biological Co., Ltd.
WANT Balance Instrument Co., Ltd.
Changzhou Andwin International Corporation Limited
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.