• 八十年代先后研制成功起重机、壁柱起重机,取得了国家实用新型专利证书

    The early eighties have successfully developed a set of crane column Arm, Arm type cranes, and achieved a national utility model patent.

    youdao

  • 八十年代先后研制成功起重机、壁柱起重机,取得了国家实用新型专利证书

    The early eighties have successfully developed a set of crane column Arm, Arm type cranes, and achieved a national utility model patent.

    youdao

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