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henan changhao engineering design co., ltd. was established in november 2011. it is a comprehensive survey and design enterprise in henan province integrating transportation engineering, municipal engineering, garden engineering, planning, feasibility study report preparation, design, survey and survey, and engineering technical consultation. passed2025-01-16 16:38:10
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occupational health and safety management system certification. the company has the b-level qualification for the design of the highway industry, the b-level qualification for municipal engineering (roads, bridges, water supply, drainage) design, the b-level qualification for the design of the landscape garden industry, and the b-level qualification for the survey industry (measurement).