Group 1 - The Shanghai Songjiang District Construction and Management Committee imposed an administrative penalty on China Railway Wuhan Electrification Bureau Group Co., Ltd. for serious violations in material testing during construction projects [1][2] - The violation involved using materials that had not been tested, which directly contravenes the Shanghai Construction Engineering Testing Management Measures [2] - The penalty amounted to a fine of 20,000 RMB, with no confiscation of illegal gains or suspension of licenses involved [1][2] Group 2 - The Shanghai Construction Engineering Testing Management Measures require that materials related to structural safety and main functionality must be tested by qualified institutions, prohibiting the use of untested or non-compliant materials [2] - The incident highlights potential lapses in project site management and compliance processes within China Railway Wuhan Electrification Bureau, which could pose risks to engineering quality and safety [2] - China Railway Electrification Bureau Group Co., Ltd., established in 1958, is a major contractor in electrical engineering, involved in various sectors including high-speed rail electrification and urban rail transit [4]