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