牙买加采购需求：连栋温室、薄膜农业温室、无外遮阳温室、高隧道温室、塑料薄膜温室、大型温室

I'm interested in constructing a greenhouse measuring 24 by 12 feet and would like some guidance on the materials required for this project. Could you provide a detailed list of the essential components, including framing, covering, and foundation materials? Additionally, any recommendations on insulation options and ventilation systems would be greatly appreciated, as they play a crucial role in maintaining a suitable environment for plant growth. Moreover, I'm curious if you offer different grades or types of materials that could affect durability and cost. It would be helpful to understand the pros and cons of each option available to help me make an informed decision. If you have any specific product suggestions or packages that could streamline the purchasing process, please include those as well. Looking forward to your insights!