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Bimetallic Single Screw and Barrel for Blow Film with High Quality. Engineering-Led Customization: Tailored geometry and material solutions for specific polymer requirements. High-Quality Bimetallic Options: Nitrided case depth 0.45-0.7mm with hardness Hv 850-10000. Comprehensive Warranty Coverage: 12-18 months warranty under normal use conditions. Global Export Experience: Serving clients across 50+ countries with 25 years of export history. Strict Quality Control: 99.8% qualification rate with 100% inspection of hardness and tolerance. Wide Material Compatibility: Suitable for PVC, PE, PP, WPC, and abrasive/corrosive polymers. Digital Production Tracking: Unique ID tracking and real-time recording for full traceability.