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Dongturbo Electric Company Ltd
Jiangsu New-Tech Development Co., Ltd
Hangzhou Huibao Electron Corp., Ltd
Sichuan Hongsheng Heavy Machinery Co., Ltd
Henan EP Machinery Co.,Ltd
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Zhejiang Yonjou Technology Co., Ltd.
Shaanxi Jia Hui Jia Shun Industrial Co., Ltd.