博茨瓦纳采购需求：温室、玻璃温室、水培法、气培水培法、冷却风扇

I am reaching out to inquire about a specific greenhouse product. I am interested in ordering 20 units of a greenhouse sized 20 x 50 feet. This size fits our project requirements perfectly, and I would like to gather more information regarding the available options, including the materials used and any customization features. Additionally, could you provide details on pricing, lead times, and shipping arrangements? It would also be great to know if there are any ongoing promotions or discounts for bulk purchases. Looking forward to your prompt response so we can move ahead with this procurement!