![]() Production pipeline, steel pipe, pipe fitting, elbow, flange, three-way, size head, elbow, socket pipe, head, soft joint, compensator, anti-corrosion insulation, wear resistant, lined pipe, electric plant, Branch hanger, chemical pipe fittings, aluminum, copper pipes, hardware, FRP pipe fittings, export business of self-production products and technology in this enterprise, and mechanical equipment, spare parts, original auxiliary materials and technologies required for this company Import business, but the state defines the company's operation or prohibiting import and export of goods and techniques. |
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