The company has obtained two more utility model patents

Recently, after the examination of the State Intellectual Property Office, the company's application for "a kind of built-in flowering bushing for expanding tube anchor bolt" and "a kind of integrated communication control device for underground shaft cage" have been granted utility model patents. Since the establishment of the technology center, the company has actively carried out research and development activities. Up to now, the company has obtained 13 utility model patents and 2 invention patents.