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Commerce Bureau of Xilingol League, Inner Mongolia more

Inner Mongolia University of Science and Technology more

Wood Industry Research Institute, Academy of Forestry Sciences more

Hebei Provincial Water Conservancy Technology Testing and Promotion Center more

Handan Product Quality Supervision and Inspection Institute more

National Agricultural Irrigation and Drainage Equipment Quality Supervision and Inspection Center more

National Building Materials Science Product Quality Supervision, Inspection and Testing Center more

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