Buyers must prioritize the chassis stability and engine performance, typically looking for brands like Mercedes-Benz, Iveco, or high-end domestic equivalents with Euro VI emission standards. For the living quarters, ensure the use of lightweight, high-strength sandwich composite panels for insulation and E0 grade eco-friendly interior materials to prevent formaldehyde issues. Electrical systems should feature lithium battery banks (400Ah-800Ah), high-wattage solar arrays, and pure sine wave inverters to ensure off-grid capability.