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Shanghai Enbbon Automation Instrument Co., Ltd.
Shaanxi Dongyujia Iron and Steel Co., Ltd.
Danyang Xingda Optical Instrument Co., Ltd
Zhejiang Xuandong Valve Co., Ltd
Shenzhen Siruijingda Precision Instrument Co., Ltd
Xi'an Camon Automatic Instrument Co.,Ltd
Anhui Jianlong Engineering Co.,Limited
Chengdu Sijie Chemical Machinery Co., Ltd