A utility model patent certificate for a rough machining tool for the inner cavity of a plug valve-Honors and Qualifications-Yongfeng (Chongqing) New Materials Technology Research Institute Co., Ltd.
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A utility model patent certificate for a rough machining tool for the inner cavity of a plug valve
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2025-09-09 17:16:38
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A utility model patent certificate for a rough machining tool for the inner cavity of a plug valve-Honors and Qualifications-Yongfeng (Chongqing) New Materials Technology Research Institute Co., Ltd.