Stainless Steel Bellows, Aluminum Foil Fiberglass Sleeve, Post Tension Duct manufacturer / supplier in China, offering Durable Post-Tensioning Galvanized Flat Duct for Pre-Stressed Concrete Bridges, Galvanized Corrugated Pipe Post Tension Duct Metal Bellows for Construction and Bridge Spiral Pipe, Heat Shield Sleeve Aluminum Foil Insulation Pipe Fiberglass Corrugated Tube for Automotive Protection and so on.
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