The FL-505 Back Massage Massager for Lower Back Pain is designed to deliver targeted therapeutic relief to strained lumbar muscles. Manufactured inside FENLI’s ISO9001-certified 4,000-square-meter facility in Zhejiang, China, each unit features pure-copper motor drives, four 3D kneading nodes, and integrated PTC ceramic thermal elements. The massager conforms naturally to the lumbar curve, providing deep tissue pressure and gentle 42°C heating that boosts micro-circulation and relieves muscle tightness. FENLI enforces strict 100% full-line quality control, including load endurance, noise testing, and thermal calibration checks. Certified with CE, RoHS, and FCC standards, FENLI provides global clients with custom private label options, branded packaging, and fast export delivery.