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Recently, Xiamen Holsin Engineering Testing Co., Ltd., a subsidiary of C&D Holsin Engineering Consulting Group, passed the 2022 construction industry (testing institution) credit rating evaluation and was given a 2022 construction industry (testing institution) AAA credit rating by the China Construction Industry Association, making it one of the highest AAA credit ranked testing institutions.

Since its establishment, Holsin Testing has focused on the inspection and testing of highways, bridges, tunnels, water transport, municipal engineering, housing construction, rail transit, railways, and other civil engineering projects as it provides customers with comprehensive, cross-phase, and integrated project life cycle testing and consulting services.