A utility model patent from China Coal Building and Installation Engineering Group Company is authorized by the State Intellectual Property Office

Date:2019 -09 -24


Recently, 'a kind of deep-hole cable suspension device' declared by China Coal Building and Installation Engineering Group Company has been authorized by the State Intellectual Property Office. This technology significantly reduces the safety risk of deep hole cable laying, reduces cable stress and extends cable service life. (China Coal Building and Installation Engineering Group Company)