Tianhongxiang NH-RVS 2×2.5 mm² fire-resistant twisted pair wire is a dual-core twisted flexible cable designed for emergency power supply and signal transmission in fire protection systems. Adopting 99.99% high-purity oxygen-free copper conductors, fire-resistant mica tape wrapping, and rubber waterproof insulation, it complies with GB/T 19666-2019 national fire-resistant cable standards. It features fire resistance, waterproof performance, and flexible laying, perfectly meeting the bulk procurement needs of construction engineering, fire protection system installation, and property facility maintenance.