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HQCEC's core businesses include: Chemical, Petrochemicals, Fertilizer, Fine Chemical, Oil Field Facilities, Gas Processing Plants & Facilities, Oil Refining, Light Industry, Textile, Pharmaceuticals, Chemical Mining and Dressing, Engineering Geological Reconnoiter, Engineering Survey, Geotechnical Engineering, Transportation, Telecommunication, Town Gas, Food, Civil Architecture, Civic Building, Thermoelectric Industry, Water Supply and Drainage, Environmental Protection Facilities, Storage & Transportation Facilities and etc.
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