多米尼加采购需求：集装箱房屋，轻钢别墅，模块化房屋，彩钢夹芯板，集装箱房屋，改装集装箱

I'm looking for detailed information on pre-built modular houses. Specifically, I'd like to understand the various designs, configurations, and any customization options available. It would be great to know more about the materials used and the energy efficiency features you offer. Additionally, please provide information on pricing, lead times, and bulk order discounts if available. I'm also interested in warranty details and any after-sales support you provide. Your prompt response will be greatly appreciated as I'm eager to explore potential purchasing options.