Full-cycle, one-stop, nationally networked after-sales service. [Four-Tier Mechanism] • Tier 1 · HQ: unified dispatch, standards, escalation • Tier 2 · Regional: nearby rapid response • Tier 3 · Online: 7×24 remote diagnosis • Tier 4 · On-site: certified engineer visits [Scope] Factory QC, commissioning, training, emergency repair, maintenance, firmware, parts, calibration, factory maintenance, O&M, support. [Large Projects] On-site O&M, 7×24 response, liaison, annual agreements. [Individual] Online diagnosis, nearby repair, affordable maintenance, lifetime consultation. [Network] Ningbo HQ + Shengzhou base + Cicheng Sports Park.