Choosing the right thickness of EPS Cement Sandwich Wall Panel is the key to getting the best performance and value for your construction project. For simple interior partitions in offices or apartments that only need basic separation, a 50mm thick EPS Cement Sandwich Wall Panel is the most cost-effective choice, it is lightweight, easy to cut and perfect for non-load-bearing walls. For exterior walls in mild climate areas, an 80mm thick EPS Cement Sandwich Wall Panel provides enough insulation to keep indoor temperatures stable without extra layers. If you are building in a cold region with long, harsh winters, you should go for a 100mm or 120mm thick panel, which offers far higher thermal resistance to cut down heating costs. For load-bearing exterior walls in multi-story buildings, a 150mm thick EPS Cement Sandwich Wall Panel is the standard, it can support upper floor loads while still maintaining excellent insulation performance. Always match the panel thickness to your local climate and building code requirements, to avoid overspending on unnecessary extra thickness or ending up with insufficient performance.