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Zengyu Industrial (Shanghai) Co., Ltd.
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Nanjing Cetu Surveying Instrument Co., Ltd.
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Shanghai Newdi Navigation Technology Co., Ltd.
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Nanjing Cetu Surveying Instrument Co., Ltd.
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Shanghai Apekstool Optoelectronic Technology Co., Ltd.
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Tianjin Unique Technology Co., Ltd.
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Zengyu Industrial (Shanghai) Co., Ltd.
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Shanghai Hexin Survey Instrument Co., Ltd.
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Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
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Zengyu Industrial (Shanghai) Co., Ltd.
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Shanghai Newdi Navigation Technology Co., Ltd.