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Tianjin Humanda Technology Development Co., Ltd.
H.K Lanyuan Protective (Wuhan) Co., Limited
Jinan Youlyy Industrial Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Xilong Scientific Co., Ltd.
Donghai Yukang Quartz Material Co., Ltd.
Taizhou Runlab Labware Manufacturing Co., Ltd.
Qingdao Carong Import & Export Co., Ltd.