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Beijing Kiers Science & Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Qingdao Tlead International Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Shanghai Cixi Instrument Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Taizhou Runlab Labware Manufacturing Co., Ltd.
Shenzhen Xavier Precision Component Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Hangzhou Anow Microfiltration Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Krell Precision (Yangzhou) Company Limited
Beijing Topsky Century Holding Co., Ltd.
Tianjin Humanda Technology Development Co., Ltd.
WANT Balance Instrument Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Shenzhen Slinya Electronic Co., Ltd.