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Jiangsu Biyibi Intelligent Technology Co., Ltd
Zhonghang International Mineral Resources Co., Ltd
Hxseals Industry Co.,Limited
Shenzhen Huazheng Precision Technology Co., Ltd.
Wuxi Houpu Environmental Technology Co.,Ltd
Anhui GS Technology Co., Ltd
Fujian Province Hualong Machinery Co., Ltd
Qingdao Sinofirst Machinery Co., Ltd
Quanzhou Nuojie Craft Co., Ltd.
Laizhou Weiyi Experimental Machinery Manufacture Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Qingdao Tlead International Co., Ltd.
Zhengzhou CY Scientific Instrument Co., Ltd.
Leader Precision Instrument Co., Ltd.
Guangdong Hongsheng Testing Equipment Co., Ltd.
Dongguan City Gaoxin Testing Equipment Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.