The global prefabricated modular construction industry is experiencing explosive growth, and the EPS Cement Sandwich Panel has quickly become the preferred wall material for most leading modular building manufacturers worldwide. These panels are specifically engineered to integrate perfectly with modular building systems, with standardized dimensions that match most prefab module design specifications. Each panel is fully prefabricated in the factory with precise dimensions and finished surfaces, so no complex on-site processing is required when assembling the modular units. The tongue-and-groove edge design of the panels allows for extremely fast and seamless interconnection, enabling workers to assemble a complete modular unit's wall system in just a few hours. This high level of prefabrication drastically reduces on-site construction waste, which is a major pain point in traditional building sites. The panels' consistent quality from factory production ensures that every modular unit has uniform wall performance in terms of fire safety, thermal insulation, and sound insulation. For temporary prefab housing projects like disaster relief shelters or remote site worker camps, these panels can be rapidly deployed to create comfortable, safe living spaces in a fraction of the time required with traditional construction methods. The modular compatibility also makes future building expansion or modification extremely easy, as individual panels can be removed and replaced without damaging the rest of the wall structure.