High Quality Yellow PVC Round Flat Heat Shrink Cable Marker Sleeve Tube. Flame Retardant Material: Made of soft PVC with normal flame retardant properties for safety. IP68 Waterproof Rating: Provides complete protection against dust and water immersion. Torsion Resistance: Designed to withstand twisting forces without damage. Multiple Certification: Certified by CE, RoHS, ISO9001, CQC, UL, and SASO. Customized Design: Full customization available including colors, shapes, and legends. Fast Delivery: 3-30 working days delivery based on final quantities. OEM & ODM Service: Professional design and production support for custom products. Quality Assurance: All products undergo 24 hours aging test before delivery.