![]() Production pipes, pipeline equipment, steel forgings, elbows, flanges, three-way, abduct tube, closure, four-way, high-pressure screws, wear-resistant insulation pipes, sales of steel pipes, raw materials, gaskets, and business Products and technology export business and import business of mechanical equipment, spare parts, raw materials and technologies required for this company, except for the national defined goods and techniques for import and export. |
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