Sơ đồ chỗ ngồi China Southern Airlines Airbus A350-900

High-density two-class China Southern A350-900 (csair.com internal designator "A350-900(350)"; no premium economy). China Southern publishes per-cabin seat counts and per-cabin pitch/width/recline/screen/power on its cabin-layout page: Business 28 (43" pitch, 23" width, 180° lie-flat), Economy 307 (31–32" pitch, 17.5" width, 6" recline); power outlet in Business only, USB in both cabins (csair lists a generic "USB port"; modelled as USB-A, exact connector unstated). China Southern does NOT publish an exact row grid, so row numbering, column letters, door/exit positions, the over-wing span (rows 20-34) and the rear-fuselage taper (rows 44-45) are DERIVED from the published counts and standard A350-900 geometry (Business 1-2-1 rows 1-7 = 28; Economy 3-3-3 rows 11-43 = 297 plus a seven-abreast taper row 44 and a centre-only row 45 to reach 307). These structural placements are best-effort inferences, not published China Southern data; every cabin carries derived:true and windowAlignment is left "unknown" for window seats because a derived grid cannot prove a real window lines up (no A350 window grid exists, so windowGridType is omitted). Fleet: Wikipedia lists 20 A350-900 airframes across BOTH China Southern configs (this 335-seat two-class and the 314-seat three-class cz-359-314) without a per-config airframe split, so no per-config fleetCount is asserted.