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Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Labmen Instrument Limited
Guangdong Huilv Laboratory Equipment Scientific and Technological Co., Ltd.
Zhejiang Tugong Instrument Co., Ltd.
Changzhou Danrui Experimental Instrument Equipment Co., Ltd.
Huanghua Faithful Instrument Co., Ltd.
Zhengzhou CY Scientific Instrument Co., Ltd.