南非采购需求：玻璃温室、多跨农业温室、无外遮阳温室、农业温室系统、玻璃温室建造、多跨温室设计

I'm looking to explore options for greenhouses suitable for various types of plants and climate conditions. Specifically, I'm interested in designs that provide excellent ventilation and temperature control. Ideally, I would like to know about the materials used in construction, any available customization options, and the different sizes that you offer. Additionally, it would be great to get insights on the assembly process and whether your greenhouses come with any additional features, like automatic ventilation systems or shading options. If possible, please share pricing details, lead times, and minimum order quantities. Looking forward to your prompt response with the relevant information.