Gas Cylinder Adaptive Lumbar Support & Massage Module: Features an innovative lumbar module with gas cylinder automated lumbar tracking, providing dynamic support that automatically adapts to your posture. Integrated electric massage (three intensity levels) and constant-temperature heat therapy (45°C) deliver targeted relief and comfort during long work sessions. Certified Quality: Built with a 4th-grade carbonized gas lift (certified anti-explosion, 140kg+ load), BIMA-tested aluminum alloy base, and premium mesh for durability, safety, and long-term use. Broad Market Appeal: Designed for both e-commerce and offline retailers, the U100 appeals to professionals, home office users, and anyone seeking advanced ergonomic support. Competitive Price: Delivers premium features—massage, heat, adaptive lumbar, and robust construction—at a price point that outperforms comparable chairs in the market. Flexible MOQ: Ideal for both large importers and smaller retailers, with flexible minimum order quantities to suit diverse business needs. Option Choices Color: Classical black, grey Seat and backrest material : horizontal pattern mesh or flocked office chair mesh Chair Base Raw Material: premium aluminum alloy base.