Chengdu Design and Research Institute of Building Materials Industry Co., Ltd (Sinoma-CDI) established in1953, a member of CNBM Group (No.351 of Fortune Global 500), subsidiary of Sinoma International Engineering  Co., Ltd., No. 38 in ENR 2025. SINOMA CDI, is one of the earliest established industry design and research institutes in China, and has become one of world-leading EPC contractors and integrated service provider.

Construction of public sports, repair and maintenance of dams, construction of cement plants, construction of dams, repair and maintenance of roads and streets, repair of residential and non-residential buildings, construction of public housing, cleaning of waterways.