Group 1 - The State Intellectual Property Office of China has granted a patent for "cable trench laying device and construction method" to China Twenty Metallurgy Group Co., Ltd. and Hebei Twenty Metallurgy Construction Co., Ltd. The patent announcement number is CN113839347B, with an application date of November 2021 [1] - China Twenty Metallurgy Group Co., Ltd. was established in 2001 and is located in Shanghai. The company primarily engages in professional technical services and has a registered capital of 2.05 billion RMB. It has made investments in 105 enterprises, participated in 5,000 bidding projects, and holds 5,000 patent records, along with 1,049 administrative licenses [1] - Hebei Twenty Metallurgy Construction Co., Ltd. was founded in 2007 and is based in Xingtai. The company focuses on general equipment manufacturing and has a registered capital of 20 million RMB. It has invested in 2 enterprises, participated in 43 bidding projects, and holds 191 patent records, along with 3 administrative licenses [1]
二十冶取得电缆沟放缆装置及施工方法专利
Sou Hu Cai Jing·2026-01-13 07:04