南非采购需求：多跨温室、薄膜温室、无外遮阳温室、高架隧道温室、塑料薄膜温室、大型温室

I'm looking to source a greenhouse with specific dimensions: approximately 16.6 meters in length and 6.5 meters in width. The material for the structure should be 200 microns thick plastic, ensuring durability and protection for the plants inside. It's essential that the greenhouse can withstand varying weather conditions, so please include details about its UV resistance and suitability for different climates. Additionally, I'd appreciate it if you could provide options for any customization available, including openings for ventilation or potential add-ons like shading systems. It would be great to know the lead times for production and shipping, along with pricing details for bulk orders. Looking forward to your comprehensive proposal!