How Spare Parts and After-Sales Service Affect Mobility Distributor Profitability For importers and distributors, the true cost of an electric wheelchair extends far beyond the initial purchase price. Reliable spare parts, efficient warranty support, and professional technical service directly influence customer satisfaction, maintenance costs, and long-term profitability. This guide explains how buyers can evaluate a manufacturer's after-sales capabilities, helping reduce sourcing risks while building stronger and more sustainable business partnerships.